257466209

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 369266688

約数和(自身を除く): 111800479

約数列:

[1, 7, 11, 13, 23, 53, 77, 91, 143, 161, 211, 253, 299, 371, 583, 689, 1001, 1219, 1477, 1771, 2093, 2321, 2743, 3289, 4081, 4823, 4853, 7579, 8533, 11183, 13409, 15847, 16247, 19201, 23023, 30173, 33971, 53053, 53383, 63089, 78281, 93863, 110929, 123013, 145379, 174317, 211211, 257209, 373681, 441623, 693979, 861091, 1017653, 1220219, 1599169, 1800463, 2829299, 3343717, 4857853, 11194183, 19805093, 23406019, 36780887, 257466209]

約数ペア:

[(1, 257466209), (7, 36780887), (11, 23406019), (13, 19805093), (23, 11194183), (53, 4857853), (77, 3343717), (91, 2829299), (143, 1800463), (161, 1599169), (211, 1220219), (253, 1017653), (299, 861091), (371, 693979), (583, 441623), (689, 373681), (1001, 257209), (1219, 211211), (1477, 174317), (1771, 145379), (2093, 123013), (2321, 110929), (2743, 93863), (3289, 78281), (4081, 63089), (4823, 53383), (4853, 53053), (7579, 33971), (8533, 30173), (11183, 23023), (13409, 19201), (15847, 16247)]