20816495280

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{25339}}^1$

素因数の和:25528

約数の個数: 240

約数和(自身を含む): 80389021440

約数和(自身を除く): 59572526160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 163, 168, 180, 210, 240, 252, 280, 315, 326, 336, 360, 420, 489, 504, 560, 630, 652, 720, 815, 840, 978, 1008, 1141, 1260, 1304, 1467, 1630, 1680, 1956, 2282, 2445, 2520, 2608, 2934, 3260, 3423, 3912, 4564, 4890, 5040, 5705, 5868, 6520, 6846, 7335, 7824, 9128, 9780, 10269, 11410, 11736, 13040, 13692, 14670, 17115, 18256, 19560, 20538, 22820, 23472, 25339, 27384, 29340, 34230, 39120, 41076, 45640, 50678, 51345, 54768, 58680, 68460, 76017, 82152, 91280, 101356, 102690, 117360, 126695, 136920, 152034, 164304, 177373, 202712, 205380, 228051, 253390, 273840, 304068, 354746, 380085, 405424, 410760, 456102, 506780, 532119, 608136, 709492, 760170, 821520, 886865, 912204, 1013560, 1064238, 1140255, 1216272, 1418984, 1520340, 1596357, 1773730, 1824408, 2027120, 2128476, 2280510, 2660595, 2837968, 3040680, 3192714, 3547460, 3648816, 4130257, 4256952, 4561020, 5321190, 6081360, 6385428, 7094920, 7981785, 8260514, 8513904, 9122040, 10642380, 12390771, 12770856, 14189840, 15963570, 16521028, 18244080, 20651285, 21284760, 24781542, 25541712, 28911799, 31927140, 33042056, 37172313, 41302570, 42569520, 49563084, 57823598, 61953855, 63854280, 66084112, 74344626, 82605140, 86735397, 99126168, 115647196, 123907710, 127708560, 144558995, 148689252, 165210280, 173470794, 185861565, 198252336, 231294392, 247815420, 260206191, 289117990, 297378504, 330420560, 346941588, 371723130, 433676985, 462588784, 495630840, 520412382, 578235980, 594757008, 693883176, 743446260, 867353970, 991261680, 1040824764, 1156471960, 1301030955, 1387766352, 1486892520, 1734707940, 2081649528, 2312943920, 2602061910, 2973785040, 3469415880, 4163299056, 5204123820, 6938831760, 10408247640, 20816495280]

約数ペア:

[(1, 20816495280), (2, 10408247640), (3, 6938831760), (4, 5204123820), (5, 4163299056), (6, 3469415880), (7, 2973785040), (8, 2602061910), (9, 2312943920), (10, 2081649528), (12, 1734707940), (14, 1486892520), (15, 1387766352), (16, 1301030955), (18, 1156471960), (20, 1040824764), (21, 991261680), (24, 867353970), (28, 743446260), (30, 693883176), (35, 594757008), (36, 578235980), (40, 520412382), (42, 495630840), (45, 462588784), (48, 433676985), (56, 371723130), (60, 346941588), (63, 330420560), (70, 297378504), (72, 289117990), (80, 260206191), (84, 247815420), (90, 231294392), (105, 198252336), (112, 185861565), (120, 173470794), (126, 165210280), (140, 148689252), (144, 144558995), (163, 127708560), (168, 123907710), (180, 115647196), (210, 99126168), (240, 86735397), (252, 82605140), (280, 74344626), (315, 66084112), (326, 63854280), (336, 61953855), (360, 57823598), (420, 49563084), (489, 42569520), (504, 41302570), (560, 37172313), (630, 33042056), (652, 31927140), (720, 28911799), (815, 25541712), (840, 24781542), (978, 21284760), (1008, 20651285), (1141, 18244080), (1260, 16521028), (1304, 15963570), (1467, 14189840), (1630, 12770856), (1680, 12390771), (1956, 10642380), (2282, 9122040), (2445, 8513904), (2520, 8260514), (2608, 7981785), (2934, 7094920), (3260, 6385428), (3423, 6081360), (3912, 5321190), (4564, 4561020), (4890, 4256952), (5040, 4130257), (5705, 3648816), (5868, 3547460), (6520, 3192714), (6846, 3040680), (7335, 2837968), (7824, 2660595), (9128, 2280510), (9780, 2128476), (10269, 2027120), (11410, 1824408), (11736, 1773730), (13040, 1596357), (13692, 1520340), (14670, 1418984), (17115, 1216272), (18256, 1140255), (19560, 1064238), (20538, 1013560), (22820, 912204), (23472, 886865), (25339, 821520), (27384, 760170), (29340, 709492), (34230, 608136), (39120, 532119), (41076, 506780), (45640, 456102), (50678, 410760), (51345, 405424), (54768, 380085), (58680, 354746), (68460, 304068), (76017, 273840), (82152, 253390), (91280, 228051), (101356, 205380), (102690, 202712), (117360, 177373), (126695, 164304), (136920, 152034)]