256722245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 338300928

約数和(自身を除く): 81578683

約数列:

[1, 5, 13, 65, 127, 137, 227, 635, 685, 1135, 1651, 1781, 2951, 8255, 8905, 14755, 17399, 28829, 31099, 86995, 144145, 155495, 226187, 374777, 404287, 1130935, 1873885, 2021435, 3949573, 19747865, 51344449, 256722245]

約数ペア:

[(1, 256722245), (5, 51344449), (13, 19747865), (65, 3949573), (127, 2021435), (137, 1873885), (227, 1130935), (635, 404287), (685, 374777), (1135, 226187), (1651, 155495), (1781, 144145), (2951, 86995), (8255, 31099), (8905, 28829), (14755, 17399)]