978014960

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{940399}}^1$

素因数の和:940425

約数の個数: 40

約数和(自身を含む): 2448801600

約数和(自身を除く): 1470786640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 940399, 1880798, 3761596, 4701995, 7523192, 9403990, 12225187, 15046384, 18807980, 24450374, 37615960, 48900748, 61125935, 75231920, 97801496, 122251870, 195602992, 244503740, 489007480, 978014960]

約数ペア:

[(1, 978014960), (2, 489007480), (4, 244503740), (5, 195602992), (8, 122251870), (10, 97801496), (13, 75231920), (16, 61125935), (20, 48900748), (26, 37615960), (40, 24450374), (52, 18807980), (65, 15046384), (80, 12225187), (104, 9403990), (130, 7523192), (208, 4701995), (260, 3761596), (520, 1880798), (1040, 940399)]