20966912

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{1321}}^1$

素因数の和:1370

約数の個数: 40

約数和(自身を含む): 43276992

約数和(自身を除く): 22310080

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 512, 992, 1321, 1984, 2642, 3968, 5284, 7936, 10568, 15872, 21136, 40951, 42272, 81902, 84544, 163804, 169088, 327608, 338176, 655216, 676352, 1310432, 2620864, 5241728, 10483456, 20966912]

約数ペア:

[(1, 20966912), (2, 10483456), (4, 5241728), (8, 2620864), (16, 1310432), (31, 676352), (32, 655216), (62, 338176), (64, 327608), (124, 169088), (128, 163804), (248, 84544), (256, 81902), (496, 42272), (512, 40951), (992, 21136), (1321, 15872), (1984, 10568), (2642, 7936), (3968, 5284)]