205128980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:369

約数の個数: 96

約数和(自身を含む): 505854720

約数和(自身を除く): 300725740

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 89, 101, 140, 163, 178, 202, 326, 356, 404, 445, 505, 623, 652, 707, 815, 890, 1010, 1141, 1246, 1414, 1630, 1780, 2020, 2282, 2492, 2828, 3115, 3260, 3535, 4564, 5705, 6230, 7070, 8989, 11410, 12460, 14140, 14507, 16463, 17978, 22820, 29014, 32926, 35956, 44945, 58028, 62923, 65852, 72535, 82315, 89890, 101549, 115241, 125846, 145070, 164630, 179780, 203098, 230482, 251692, 290140, 314615, 329260, 406196, 460964, 507745, 576205, 629230, 1015490, 1152410, 1258460, 1465207, 2030980, 2304820, 2930414, 5860828, 7326035, 10256449, 14652070, 20512898, 29304140, 41025796, 51282245, 102564490, 205128980]

約数ペア:

[(1, 205128980), (2, 102564490), (4, 51282245), (5, 41025796), (7, 29304140), (10, 20512898), (14, 14652070), (20, 10256449), (28, 7326035), (35, 5860828), (70, 2930414), (89, 2304820), (101, 2030980), (140, 1465207), (163, 1258460), (178, 1152410), (202, 1015490), (326, 629230), (356, 576205), (404, 507745), (445, 460964), (505, 406196), (623, 329260), (652, 314615), (707, 290140), (815, 251692), (890, 230482), (1010, 203098), (1141, 179780), (1246, 164630), (1414, 145070), (1630, 125846), (1780, 115241), (2020, 101549), (2282, 89890), (2492, 82315), (2828, 72535), (3115, 65852), (3260, 62923), (3535, 58028), (4564, 44945), (5705, 35956), (6230, 32926), (7070, 29014), (8989, 22820), (11410, 17978), (12460, 16463), (14140, 14507)]