405767990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{68891}}^1$

素因数の和:68948

約数の個数: 32

約数和(自身を含む): 793635840

約数和(自身を除く): 387867850

約数列:

[1, 2, 5, 10, 19, 31, 38, 62, 95, 155, 190, 310, 589, 1178, 2945, 5890, 68891, 137782, 344455, 688910, 1308929, 2135621, 2617858, 4271242, 6544645, 10678105, 13089290, 21356210, 40576799, 81153598, 202883995, 405767990]

約数ペア:

[(1, 405767990), (2, 202883995), (5, 81153598), (10, 40576799), (19, 21356210), (31, 13089290), (38, 10678105), (62, 6544645), (95, 4271242), (155, 2617858), (190, 2135621), (310, 1308929), (589, 688910), (1178, 344455), (2945, 137782), (5890, 68891)]