20174960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1021}}^1$

素因数の和:1066

約数の個数: 80

約数和(自身を含む): 53225760

約数和(自身を除く): 33050800

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1021, 1040, 1235, 1520, 1976, 2042, 2470, 3952, 4084, 4940, 5105, 8168, 9880, 10210, 13273, 16336, 19399, 19760, 20420, 26546, 38798, 40840, 53092, 66365, 77596, 81680, 96995, 106184, 132730, 155192, 193990, 212368, 252187, 265460, 310384, 387980, 504374, 530920, 775960, 1008748, 1061840, 1260935, 1551920, 2017496, 2521870, 4034992, 5043740, 10087480, 20174960]

約数ペア:

[(1, 20174960), (2, 10087480), (4, 5043740), (5, 4034992), (8, 2521870), (10, 2017496), (13, 1551920), (16, 1260935), (19, 1061840), (20, 1008748), (26, 775960), (38, 530920), (40, 504374), (52, 387980), (65, 310384), (76, 265460), (80, 252187), (95, 212368), (104, 193990), (130, 155192), (152, 132730), (190, 106184), (208, 96995), (247, 81680), (260, 77596), (304, 66365), (380, 53092), (494, 40840), (520, 38798), (760, 26546), (988, 20420), (1021, 19760), (1040, 19399), (1235, 16336), (1520, 13273), (1976, 10210), (2042, 9880), (2470, 8168), (3952, 5105), (4084, 4940)]