20577808

素因数分解:

$2^4\times {\mathrm{557}}^1\times {\mathrm{2309}}^1$

素因数の和:2874

約数の個数: 20

約数和(自身を含む): 39958380

約数和(自身を除く): 19380572

約数列:

[1, 2, 4, 8, 16, 557, 1114, 2228, 2309, 4456, 4618, 8912, 9236, 18472, 36944, 1286113, 2572226, 5144452, 10288904, 20577808]

約数ペア:

[(1, 20577808), (2, 10288904), (4, 5144452), (8, 2572226), (16, 1286113), (557, 36944), (1114, 18472), (2228, 9236), (2309, 8912), (4456, 4618)]