21085780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62017}}^1$

素因数の和:62043

約数の個数: 24

約数和(自身を含む): 46885608

約数和(自身を除く): 25799828

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62017, 124034, 248068, 310085, 620170, 1054289, 1240340, 2108578, 4217156, 5271445, 10542890, 21085780]

約数ペア:

[(1, 21085780), (2, 10542890), (4, 5271445), (5, 4217156), (10, 2108578), (17, 1240340), (20, 1054289), (34, 620170), (68, 310085), (85, 248068), (170, 124034), (340, 62017)]