21306544

素因数分解:

$2^4\times 7^1\times {\mathrm{281}}^1\times {\mathrm{677}}^1$

素因数の和:973

約数の個数: 40

約数和(自身を含む): 47416608

約数和(自身を除く): 26110064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 281, 562, 677, 1124, 1354, 1967, 2248, 2708, 3934, 4496, 4739, 5416, 7868, 9478, 10832, 15736, 18956, 31472, 37912, 75824, 190237, 380474, 760948, 1331659, 1521896, 2663318, 3043792, 5326636, 10653272, 21306544]

約数ペア:

[(1, 21306544), (2, 10653272), (4, 5326636), (7, 3043792), (8, 2663318), (14, 1521896), (16, 1331659), (28, 760948), (56, 380474), (112, 190237), (281, 75824), (562, 37912), (677, 31472), (1124, 18956), (1354, 15736), (1967, 10832), (2248, 9478), (2708, 7868), (3934, 5416), (4496, 4739)]