405933980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{487}}^1\times {\mathrm{587}}^1$

素因数の和:1154

約数の個数: 48

約数和(自身を含む): 867718656

約数和(自身を除く): 461784676

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 487, 587, 710, 974, 1174, 1420, 1948, 2348, 2435, 2935, 4870, 5870, 9740, 11740, 34577, 41677, 69154, 83354, 138308, 166708, 172885, 208385, 285869, 345770, 416770, 571738, 691540, 833540, 1143476, 1429345, 2858690, 5717380, 20296699, 40593398, 81186796, 101483495, 202966990, 405933980]

約数ペア:

[(1, 405933980), (2, 202966990), (4, 101483495), (5, 81186796), (10, 40593398), (20, 20296699), (71, 5717380), (142, 2858690), (284, 1429345), (355, 1143476), (487, 833540), (587, 691540), (710, 571738), (974, 416770), (1174, 345770), (1420, 285869), (1948, 208385), (2348, 172885), (2435, 166708), (2935, 138308), (4870, 83354), (5870, 69154), (9740, 41677), (11740, 34577)]