21105110

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5237}}^1$

素因数の和:5288

約数の個数: 32

約数和(自身を含む): 42239232

約数和(自身を除く): 21134122

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5237, 10474, 26185, 52370, 68081, 136162, 162347, 324694, 340405, 680810, 811735, 1623470, 2110511, 4221022, 10552555, 21105110]

約数ペア:

[(1, 21105110), (2, 10552555), (5, 4221022), (10, 2110511), (13, 1623470), (26, 811735), (31, 680810), (62, 340405), (65, 324694), (130, 162347), (155, 136162), (310, 68081), (403, 52370), (806, 26185), (2015, 10474), (4030, 5237)]