21221128

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{71693}}^1$

素因数の和:71736

約数の個数: 16

約数和(自身を含む): 40865580

約数和(自身を除く): 19644452

約数列:

[1, 2, 4, 8, 37, 74, 148, 296, 71693, 143386, 286772, 573544, 2652641, 5305282, 10610564, 21221128]

約数ペア:

[(1, 21221128), (2, 10610564), (4, 5305282), (8, 2652641), (37, 573544), (74, 286772), (148, 143386), (296, 71693)]