256499715

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{397}}^1\times {\mathrm{2267}}^1$

素因数の和:2691

約数の個数: 32

約数和(自身を含む): 433278720

約数和(自身を除く): 176779005

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 397, 1191, 1985, 2267, 5955, 6801, 7543, 11335, 22629, 34005, 37715, 43073, 113145, 129219, 215365, 646095, 899999, 2699997, 4499995, 13499985, 17099981, 51299943, 85499905, 256499715]

約数ペア:

[(1, 256499715), (3, 85499905), (5, 51299943), (15, 17099981), (19, 13499985), (57, 4499995), (95, 2699997), (285, 899999), (397, 646095), (1191, 215365), (1985, 129219), (2267, 113145), (5955, 43073), (6801, 37715), (7543, 34005), (11335, 22629)]