208215840

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1999}}^1$

素因数の和:2055

約数の個数: 192

約数和(自身を含む): 774144000

約数和(自身を除く): 565928160

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 96, 105, 112, 120, 124, 140, 155, 160, 168, 186, 210, 217, 224, 240, 248, 280, 310, 336, 372, 420, 434, 465, 480, 496, 560, 620, 651, 672, 744, 840, 868, 930, 992, 1085, 1120, 1240, 1302, 1488, 1680, 1736, 1860, 1999, 2170, 2480, 2604, 2976, 3255, 3360, 3472, 3720, 3998, 4340, 4960, 5208, 5997, 6510, 6944, 7440, 7996, 8680, 9995, 10416, 11994, 13020, 13993, 14880, 15992, 17360, 19990, 20832, 23988, 26040, 27986, 29985, 31984, 34720, 39980, 41979, 47976, 52080, 55972, 59970, 61969, 63968, 69965, 79960, 83958, 95952, 104160, 111944, 119940, 123938, 139930, 159920, 167916, 185907, 191904, 209895, 223888, 239880, 247876, 279860, 309845, 319840, 335832, 371814, 419790, 433783, 447776, 479760, 495752, 559720, 619690, 671664, 743628, 839580, 867566, 929535, 959520, 991504, 1119440, 1239380, 1301349, 1343328, 1487256, 1679160, 1735132, 1859070, 1983008, 2168915, 2238880, 2478760, 2602698, 2974512, 3358320, 3470264, 3718140, 4337830, 4957520, 5205396, 5949024, 6506745, 6716640, 6940528, 7436280, 8675660, 9915040, 10410792, 13013490, 13881056, 14872560, 17351320, 20821584, 26026980, 29745120, 34702640, 41643168, 52053960, 69405280, 104107920, 208215840]

約数ペア:

[(1, 208215840), (2, 104107920), (3, 69405280), (4, 52053960), (5, 41643168), (6, 34702640), (7, 29745120), (8, 26026980), (10, 20821584), (12, 17351320), (14, 14872560), (15, 13881056), (16, 13013490), (20, 10410792), (21, 9915040), (24, 8675660), (28, 7436280), (30, 6940528), (31, 6716640), (32, 6506745), (35, 5949024), (40, 5205396), (42, 4957520), (48, 4337830), (56, 3718140), (60, 3470264), (62, 3358320), (70, 2974512), (80, 2602698), (84, 2478760), (93, 2238880), (96, 2168915), (105, 1983008), (112, 1859070), (120, 1735132), (124, 1679160), (140, 1487256), (155, 1343328), (160, 1301349), (168, 1239380), (186, 1119440), (210, 991504), (217, 959520), (224, 929535), (240, 867566), (248, 839580), (280, 743628), (310, 671664), (336, 619690), (372, 559720), (420, 495752), (434, 479760), (465, 447776), (480, 433783), (496, 419790), (560, 371814), (620, 335832), (651, 319840), (672, 309845), (744, 279860), (840, 247876), (868, 239880), (930, 223888), (992, 209895), (1085, 191904), (1120, 185907), (1240, 167916), (1302, 159920), (1488, 139930), (1680, 123938), (1736, 119940), (1860, 111944), (1999, 104160), (2170, 95952), (2480, 83958), (2604, 79960), (2976, 69965), (3255, 63968), (3360, 61969), (3472, 59970), (3720, 55972), (3998, 52080), (4340, 47976), (4960, 41979), (5208, 39980), (5997, 34720), (6510, 31984), (6944, 29985), (7440, 27986), (7996, 26040), (8680, 23988), (9995, 20832), (10416, 19990), (11994, 17360), (13020, 15992), (13993, 14880)]