20643856

素因数分解:

$2^4\times {\mathrm{523}}^1\times {\mathrm{2467}}^1$

素因数の和:2998

約数の個数: 20

約数和(自身を含む): 40090192

約数和(自身を除く): 19446336

約数列:

[1, 2, 4, 8, 16, 523, 1046, 2092, 2467, 4184, 4934, 8368, 9868, 19736, 39472, 1290241, 2580482, 5160964, 10321928, 20643856]

約数ペア:

[(1, 20643856), (2, 10321928), (4, 5160964), (8, 2580482), (16, 1290241), (523, 39472), (1046, 19736), (2092, 9868), (2467, 8368), (4184, 4934)]