390396400

素因数分解:

$2^4\times 5^2\times {\mathrm{975991}}^1$

素因数の和:976009

約数の個数: 30

約数和(自身を含む): 937928312

約数和(自身を除く): 547531912

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 975991, 1951982, 3903964, 4879955, 7807928, 9759910, 15615856, 19519820, 24399775, 39039640, 48799550, 78079280, 97599100, 195198200, 390396400]

約数ペア:

[(1, 390396400), (2, 195198200), (4, 97599100), (5, 78079280), (8, 48799550), (10, 39039640), (16, 24399775), (20, 19519820), (25, 15615856), (40, 9759910), (50, 7807928), (80, 4879955), (100, 3903964), (200, 1951982), (400, 975991)]