21210256

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{18671}}^1$

素因数の和:18750

約数の個数: 20

約数和(自身を含む): 41675904

約数和(自身を除く): 20465648

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 18671, 37342, 74684, 149368, 298736, 1325641, 2651282, 5302564, 10605128, 21210256]

約数ペア:

[(1, 21210256), (2, 10605128), (4, 5302564), (8, 2651282), (16, 1325641), (71, 298736), (142, 149368), (284, 74684), (568, 37342), (1136, 18671)]