128874920

素因数分解:

$2^3\times 5^1\times {\mathrm{1381}}^1\times {\mathrm{2333}}^1$

素因数の和:3725

約数の個数: 32

約数和(自身を含む): 290302920

約数和(自身を除く): 161428000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1381, 2333, 2762, 4666, 5524, 6905, 9332, 11048, 11665, 13810, 18664, 23330, 27620, 46660, 55240, 93320, 3221873, 6443746, 12887492, 16109365, 25774984, 32218730, 64437460, 128874920]

約数ペア:

[(1, 128874920), (2, 64437460), (4, 32218730), (5, 25774984), (8, 16109365), (10, 12887492), (20, 6443746), (40, 3221873), (1381, 93320), (2333, 55240), (2762, 46660), (4666, 27620), (5524, 23330), (6905, 18664), (9332, 13810), (11048, 11665)]