400000112

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{221239}}^1$

素因数の和:221360

約数の個数: 20

約数和(自身を含む): 781862160

約数和(自身を除く): 381862048

約数列:

[1, 2, 4, 8, 16, 113, 226, 452, 904, 1808, 221239, 442478, 884956, 1769912, 3539824, 25000007, 50000014, 100000028, 200000056, 400000112]

約数ペア:

[(1, 400000112), (2, 200000056), (4, 100000028), (8, 50000014), (16, 25000007), (113, 3539824), (226, 1769912), (452, 884956), (904, 442478), (1808, 221239)]