215683640

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{41161}}^1$

素因数の和:41303

約数の個数: 32

約数和(自身を含む): 489004560

約数和(自身を除く): 273320920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 41161, 82322, 164644, 205805, 329288, 411610, 823220, 1646440, 5392091, 10784182, 21568364, 26960455, 43136728, 53920910, 107841820, 215683640]

約数ペア:

[(1, 215683640), (2, 107841820), (4, 53920910), (5, 43136728), (8, 26960455), (10, 21568364), (20, 10784182), (40, 5392091), (131, 1646440), (262, 823220), (524, 411610), (655, 329288), (1048, 205805), (1310, 164644), (2620, 82322), (5240, 41161)]