21695810

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{21481}}^1$

素因数の和:21589

約数の個数: 16

約数和(自身を含む): 39440952

約数和(自身を除く): 17745142

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 21481, 42962, 107405, 214810, 2169581, 4339162, 10847905, 21695810]

約数ペア:

[(1, 21695810), (2, 10847905), (5, 4339162), (10, 2169581), (101, 214810), (202, 107405), (505, 42962), (1010, 21481)]