21701710

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^2\times {\mathrm{1291}}^1$

素因数の和:1380

約数の個数: 24

約数和(自身を含む): 40070088

約数和(自身を除く): 18368378

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 1291, 1681, 2582, 3362, 6455, 8405, 12910, 16810, 52931, 105862, 264655, 529310, 2170171, 4340342, 10850855, 21701710]

約数ペア:

[(1, 21701710), (2, 10850855), (5, 4340342), (10, 2170171), (41, 529310), (82, 264655), (205, 105862), (410, 52931), (1291, 16810), (1681, 12910), (2582, 8405), (3362, 6455)]