21547128

素因数分解:

$2^3\times 3^1\times {\mathrm{43}}^1\times {\mathrm{20879}}^1$

素因数の和:20931

約数の個数: 32

約数和(自身を含む): 55123200

約数和(自身を除く): 33576072

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 43, 86, 129, 172, 258, 344, 516, 1032, 20879, 41758, 62637, 83516, 125274, 167032, 250548, 501096, 897797, 1795594, 2693391, 3591188, 5386782, 7182376, 10773564, 21547128]

約数ペア:

[(1, 21547128), (2, 10773564), (3, 7182376), (4, 5386782), (6, 3591188), (8, 2693391), (12, 1795594), (24, 897797), (43, 501096), (86, 250548), (129, 167032), (172, 125274), (258, 83516), (344, 62637), (516, 41758), (1032, 20879)]