256280895

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:326

約数の個数: 96

約数和(自身を含む): 505958400

約数和(自身を除く): 249677505

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 47, 65, 117, 135, 141, 169, 195, 235, 239, 351, 423, 507, 585, 611, 705, 717, 845, 1195, 1269, 1521, 1755, 1833, 2115, 2151, 2535, 3055, 3107, 3585, 4563, 5499, 6345, 6453, 7605, 7943, 9165, 9321, 10755, 11233, 15535, 16497, 22815, 23829, 27495, 27963, 32265, 33699, 39715, 40391, 46605, 56165, 71487, 82485, 83889, 101097, 119145, 121173, 139815, 146029, 168495, 201955, 214461, 303291, 357435, 363519, 419445, 438087, 505485, 605865, 730145, 1072305, 1090557, 1314261, 1516455, 1817595, 1898377, 2190435, 3942783, 5452785, 5695131, 6571305, 9491885, 17085393, 19713915, 28475655, 51256179, 85426965, 256280895]

約数ペア:

[(1, 256280895), (3, 85426965), (5, 51256179), (9, 28475655), (13, 19713915), (15, 17085393), (27, 9491885), (39, 6571305), (45, 5695131), (47, 5452785), (65, 3942783), (117, 2190435), (135, 1898377), (141, 1817595), (169, 1516455), (195, 1314261), (235, 1090557), (239, 1072305), (351, 730145), (423, 605865), (507, 505485), (585, 438087), (611, 419445), (705, 363519), (717, 357435), (845, 303291), (1195, 214461), (1269, 201955), (1521, 168495), (1755, 146029), (1833, 139815), (2115, 121173), (2151, 119145), (2535, 101097), (3055, 83889), (3107, 82485), (3585, 71487), (4563, 56165), (5499, 46605), (6345, 40391), (6453, 39715), (7605, 33699), (7943, 32265), (9165, 27963), (9321, 27495), (10755, 23829), (11233, 22815), (15535, 16497)]