257388976

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{877}}^1$

素因数の和:998

約数の個数: 80

約数和(自身を含む): 576150624

約数和(自身を除く): 318761648

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 52, 68, 83, 104, 136, 166, 208, 221, 272, 332, 442, 664, 877, 884, 1079, 1328, 1411, 1754, 1768, 2158, 2822, 3508, 3536, 4316, 5644, 7016, 8632, 11288, 11401, 14032, 14909, 17264, 18343, 22576, 22802, 29818, 36686, 45604, 59636, 72791, 73372, 91208, 119272, 145582, 146744, 182416, 193817, 238544, 291164, 293488, 387634, 582328, 775268, 946283, 1164656, 1237447, 1550536, 1892566, 2474894, 3101072, 3785132, 4949788, 7570264, 9899576, 15140528, 16086811, 19799152, 32173622, 64347244, 128694488, 257388976]

約数ペア:

[(1, 257388976), (2, 128694488), (4, 64347244), (8, 32173622), (13, 19799152), (16, 16086811), (17, 15140528), (26, 9899576), (34, 7570264), (52, 4949788), (68, 3785132), (83, 3101072), (104, 2474894), (136, 1892566), (166, 1550536), (208, 1237447), (221, 1164656), (272, 946283), (332, 775268), (442, 582328), (664, 387634), (877, 293488), (884, 291164), (1079, 238544), (1328, 193817), (1411, 182416), (1754, 146744), (1768, 145582), (2158, 119272), (2822, 91208), (3508, 73372), (3536, 72791), (4316, 59636), (5644, 45604), (7016, 36686), (8632, 29818), (11288, 22802), (11401, 22576), (14032, 18343), (14909, 17264)]