42471980

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{26881}}^1$

素因数の和:26969

約数の個数: 24

約数和(自身を含む): 90323520

約数和(自身を除く): 47851540

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 26881, 53762, 107524, 134405, 268810, 537620, 2123599, 4247198, 8494396, 10617995, 21235990, 42471980]

約数ペア:

[(1, 42471980), (2, 21235990), (4, 10617995), (5, 8494396), (10, 4247198), (20, 2123599), (79, 537620), (158, 268810), (316, 134405), (395, 107524), (790, 53762), (1580, 26881)]