256218978

素因数分解:

$2^1\times 3^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{4327}}^1$

素因数の和:4542

約数の個数: 32

約数和(自身を含む): 523514880

約数和(自身を除く): 267295902

約数列:

[1, 2, 3, 6, 71, 139, 142, 213, 278, 417, 426, 834, 4327, 8654, 9869, 12981, 19738, 25962, 29607, 59214, 307217, 601453, 614434, 921651, 1202906, 1804359, 1843302, 3608718, 42703163, 85406326, 128109489, 256218978]

約数ペア:

[(1, 256218978), (2, 128109489), (3, 85406326), (6, 42703163), (71, 3608718), (139, 1843302), (142, 1804359), (213, 1202906), (278, 921651), (417, 614434), (426, 601453), (834, 307217), (4327, 59214), (8654, 29607), (9869, 25962), (12981, 19738)]