42897640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{17581}}^1$

素因数の和:17653

約数の個数: 32

約数和(自身を含む): 98107560

約数和(自身を除く): 55209920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 17581, 35162, 70324, 87905, 140648, 175810, 351620, 703240, 1072441, 2144882, 4289764, 5362205, 8579528, 10724410, 21448820, 42897640]

約数ペア:

[(1, 42897640), (2, 21448820), (4, 10724410), (5, 8579528), (8, 5362205), (10, 4289764), (20, 2144882), (40, 1072441), (61, 703240), (122, 351620), (244, 175810), (305, 140648), (488, 87905), (610, 70324), (1220, 35162), (2440, 17581)]