20177640

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:201

約数の個数: 256

約数和(自身を含む): 81907200

約数和(自身を除く): 61729560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 17, 18, 20, 21, 24, 27, 28, 30, 34, 35, 36, 40, 42, 45, 51, 54, 56, 60, 63, 68, 70, 72, 84, 85, 90, 102, 105, 108, 119, 120, 126, 135, 136, 140, 153, 157, 168, 170, 180, 189, 204, 210, 216, 238, 252, 255, 270, 280, 306, 314, 315, 340, 357, 360, 378, 408, 420, 459, 471, 476, 504, 510, 540, 595, 612, 628, 630, 680, 714, 756, 765, 785, 840, 918, 942, 945, 952, 1020, 1071, 1080, 1099, 1190, 1224, 1256, 1260, 1413, 1428, 1512, 1530, 1570, 1785, 1836, 1884, 1890, 2040, 2142, 2198, 2295, 2355, 2380, 2520, 2669, 2826, 2856, 3060, 3140, 3213, 3297, 3570, 3672, 3768, 3780, 4239, 4284, 4396, 4590, 4710, 4760, 5338, 5355, 5495, 5652, 6120, 6280, 6426, 6594, 7065, 7140, 7560, 8007, 8478, 8568, 8792, 9180, 9420, 9891, 10676, 10710, 10990, 11304, 12852, 13188, 13345, 14130, 14280, 16014, 16065, 16485, 16956, 18360, 18683, 18840, 19782, 21195, 21352, 21420, 21980, 24021, 25704, 26376, 26690, 28260, 29673, 32028, 32130, 32970, 33912, 37366, 39564, 40035, 42390, 42840, 43960, 48042, 49455, 53380, 56049, 56520, 59346, 64056, 64260, 65940, 72063, 74732, 79128, 80070, 84780, 93415, 96084, 98910, 106760, 112098, 118692, 120105, 128520, 131880, 144126, 148365, 149464, 160140, 168147, 169560, 186830, 192168, 197820, 224196, 237384, 240210, 280245, 288252, 296730, 320280, 336294, 360315, 373660, 395640, 448392, 480420, 504441, 560490, 576504, 593460, 672588, 720630, 747320, 840735, 960840, 1008882, 1120980, 1186920, 1345176, 1441260, 1681470, 2017764, 2241960, 2522205, 2882520, 3362940, 4035528, 5044410, 6725880, 10088820, 20177640]

約数ペア:

[(1, 20177640), (2, 10088820), (3, 6725880), (4, 5044410), (5, 4035528), (6, 3362940), (7, 2882520), (8, 2522205), (9, 2241960), (10, 2017764), (12, 1681470), (14, 1441260), (15, 1345176), (17, 1186920), (18, 1120980), (20, 1008882), (21, 960840), (24, 840735), (27, 747320), (28, 720630), (30, 672588), (34, 593460), (35, 576504), (36, 560490), (40, 504441), (42, 480420), (45, 448392), (51, 395640), (54, 373660), (56, 360315), (60, 336294), (63, 320280), (68, 296730), (70, 288252), (72, 280245), (84, 240210), (85, 237384), (90, 224196), (102, 197820), (105, 192168), (108, 186830), (119, 169560), (120, 168147), (126, 160140), (135, 149464), (136, 148365), (140, 144126), (153, 131880), (157, 128520), (168, 120105), (170, 118692), (180, 112098), (189, 106760), (204, 98910), (210, 96084), (216, 93415), (238, 84780), (252, 80070), (255, 79128), (270, 74732), (280, 72063), (306, 65940), (314, 64260), (315, 64056), (340, 59346), (357, 56520), (360, 56049), (378, 53380), (408, 49455), (420, 48042), (459, 43960), (471, 42840), (476, 42390), (504, 40035), (510, 39564), (540, 37366), (595, 33912), (612, 32970), (628, 32130), (630, 32028), (680, 29673), (714, 28260), (756, 26690), (765, 26376), (785, 25704), (840, 24021), (918, 21980), (942, 21420), (945, 21352), (952, 21195), (1020, 19782), (1071, 18840), (1080, 18683), (1099, 18360), (1190, 16956), (1224, 16485), (1256, 16065), (1260, 16014), (1413, 14280), (1428, 14130), (1512, 13345), (1530, 13188), (1570, 12852), (1785, 11304), (1836, 10990), (1884, 10710), (1890, 10676), (2040, 9891), (2142, 9420), (2198, 9180), (2295, 8792), (2355, 8568), (2380, 8478), (2520, 8007), (2669, 7560), (2826, 7140), (2856, 7065), (3060, 6594), (3140, 6426), (3213, 6280), (3297, 6120), (3570, 5652), (3672, 5495), (3768, 5355), (3780, 5338), (4239, 4760), (4284, 4710), (4396, 4590)]