20401408

素因数分解:

$2^8\times {\mathrm{79693}}^1$

素因数の和:79709

約数の個数: 18

約数和(自身を含む): 40723634

約数和(自身を除く): 20322226

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 256, 79693, 159386, 318772, 637544, 1275088, 2550176, 5100352, 10200704, 20401408]

約数ペア:

[(1, 20401408), (2, 10200704), (4, 5100352), (8, 2550176), (16, 1275088), (32, 637544), (64, 318772), (128, 159386), (256, 79693)]