251969985

素因数分解:

$3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{42743}}^1$

素因数の和:42885

約数の個数: 24

約数和(自身を含む): 440092224

約数和(自身を除く): 188122239

約数列:

[1, 3, 5, 9, 15, 45, 131, 393, 655, 1179, 1965, 5895, 42743, 128229, 213715, 384687, 641145, 1923435, 5599333, 16797999, 27996665, 50393997, 83989995, 251969985]

約数ペア:

[(1, 251969985), (3, 83989995), (5, 50393997), (9, 27996665), (15, 16797999), (45, 5599333), (131, 1923435), (393, 641145), (655, 384687), (1179, 213715), (1965, 128229), (5895, 42743)]