172185640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{391331}}^1$

素因数の和:391353

約数の個数: 32

約数和(自身を含む): 422638560

約数和(自身を除く): 250452920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 391331, 782662, 1565324, 1956655, 3130648, 3913310, 4304641, 7826620, 8609282, 15653240, 17218564, 21523205, 34437128, 43046410, 86092820, 172185640]

約数ペア:

[(1, 172185640), (2, 86092820), (4, 43046410), (5, 34437128), (8, 21523205), (10, 17218564), (11, 15653240), (20, 8609282), (22, 7826620), (40, 4304641), (44, 3913310), (55, 3130648), (88, 1956655), (110, 1565324), (220, 782662), (440, 391331)]