21869620

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{11273}}^1$

素因数の和:11379

約数の個数: 24

約数和(自身を含む): 46403784

約数和(自身を除く): 24534164

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 11273, 22546, 45092, 56365, 112730, 225460, 1093481, 2186962, 4373924, 5467405, 10934810, 21869620]

約数ペア:

[(1, 21869620), (2, 10934810), (4, 5467405), (5, 4373924), (10, 2186962), (20, 1093481), (97, 225460), (194, 112730), (388, 56365), (485, 45092), (970, 22546), (1940, 11273)]