638490128

素因数分解:

$2^4\times {\mathrm{947}}^1\times {\mathrm{42139}}^1$

素因数の和:43094

約数の個数: 20

約数和(自身を含む): 1238410320

約数和(自身を除く): 599920192

約数列:

[1, 2, 4, 8, 16, 947, 1894, 3788, 7576, 15152, 42139, 84278, 168556, 337112, 674224, 39905633, 79811266, 159622532, 319245064, 638490128]

約数ペア:

[(1, 638490128), (2, 319245064), (4, 159622532), (8, 79811266), (16, 39905633), (947, 674224), (1894, 337112), (3788, 168556), (7576, 84278), (15152, 42139)]