21371648

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2693}}^1$

素因数の和:2740

約数の個数: 36

約数和(自身を含む): 44052288

約数和(自身を除く): 22680640

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2693, 3968, 5386, 7936, 10772, 21544, 43088, 83483, 86176, 166966, 172352, 333932, 344704, 667864, 689408, 1335728, 2671456, 5342912, 10685824, 21371648]

約数ペア:

[(1, 21371648), (2, 10685824), (4, 5342912), (8, 2671456), (16, 1335728), (31, 689408), (32, 667864), (62, 344704), (64, 333932), (124, 172352), (128, 166966), (248, 86176), (256, 83483), (496, 43088), (992, 21544), (1984, 10772), (2693, 7936), (3968, 5386)]