21431648

素因数分解:

$2^5\times 7^1\times {\mathrm{241}}^1\times {\mathrm{397}}^1$

素因数の和:655

約数の個数: 48

約数和(自身を含む): 48543264

約数和(自身を除く): 27111616

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 241, 397, 482, 794, 964, 1588, 1687, 1928, 2779, 3176, 3374, 3856, 5558, 6352, 6748, 7712, 11116, 12704, 13496, 22232, 26992, 44464, 53984, 88928, 95677, 191354, 382708, 669739, 765416, 1339478, 1530832, 2678956, 3061664, 5357912, 10715824, 21431648]

約数ペア:

[(1, 21431648), (2, 10715824), (4, 5357912), (7, 3061664), (8, 2678956), (14, 1530832), (16, 1339478), (28, 765416), (32, 669739), (56, 382708), (112, 191354), (224, 95677), (241, 88928), (397, 53984), (482, 44464), (794, 26992), (964, 22232), (1588, 13496), (1687, 12704), (1928, 11116), (2779, 7712), (3176, 6748), (3374, 6352), (3856, 5558)]