249243875

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:668

約数の個数: 32

約数和(自身を含む): 324200448

約数和(自身を除く): 74956573

約数列:

[1, 5, 25, 31, 125, 131, 155, 491, 655, 775, 2455, 3275, 3875, 4061, 12275, 15221, 16375, 20305, 61375, 64321, 76105, 101525, 321605, 380525, 507625, 1608025, 1902625, 1993951, 8040125, 9969755, 49848775, 249243875]

約数ペア:

[(1, 249243875), (5, 49848775), (25, 9969755), (31, 8040125), (125, 1993951), (131, 1902625), (155, 1608025), (491, 507625), (655, 380525), (775, 321605), (2455, 101525), (3275, 76105), (3875, 64321), (4061, 61375), (12275, 20305), (15221, 16375)]