21140788

素因数分解:

$2^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{809}}^1$

素因数の和:999

約数の個数: 24

約数和(自身を含む): 38102400

約数和(自身を除く): 16961612

約数列:

[1, 2, 4, 47, 94, 139, 188, 278, 556, 809, 1618, 3236, 6533, 13066, 26132, 38023, 76046, 112451, 152092, 224902, 449804, 5285197, 10570394, 21140788]

約数ペア:

[(1, 21140788), (2, 10570394), (4, 5285197), (47, 449804), (94, 224902), (139, 152092), (188, 112451), (278, 76046), (556, 38023), (809, 26132), (1618, 13066), (3236, 6533)]