257391505

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{6803}}^1$

素因数の和:6885

約数の個数: 32

約数和(自身を含む): 376233984

約数和(自身を除く): 118842479

約数列:

[1, 5, 7, 23, 35, 47, 115, 161, 235, 329, 805, 1081, 1645, 5405, 6803, 7567, 34015, 37835, 47621, 156469, 238105, 319741, 782345, 1095283, 1598705, 2238187, 5476415, 7354043, 11190935, 36770215, 51478301, 257391505]

約数ペア:

[(1, 257391505), (5, 51478301), (7, 36770215), (23, 11190935), (35, 7354043), (47, 5476415), (115, 2238187), (161, 1598705), (235, 1095283), (329, 782345), (805, 319741), (1081, 238105), (1645, 156469), (5405, 47621), (6803, 37835), (7567, 34015)]