21368788

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12511}}^1$

素因数の和:12583

約数の個数: 24

約数和(自身を含む): 43441664

約数和(自身を除く): 22072876

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12511, 25022, 50044, 87577, 175154, 350308, 763171, 1526342, 3052684, 5342197, 10684394, 21368788]

約数ペア:

[(1, 21368788), (2, 10684394), (4, 5342197), (7, 3052684), (14, 1526342), (28, 763171), (61, 350308), (122, 175154), (244, 87577), (427, 50044), (854, 25022), (1708, 12511)]