857841985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{1697}}^1$

素因数の和:1834

約数の個数: 64

約数和(自身を含む): 1396652544

約数和(自身を除く): 538810559

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 101, 143, 385, 455, 505, 707, 715, 1001, 1111, 1313, 1697, 3535, 5005, 5555, 6565, 7777, 8485, 9191, 11879, 14443, 18667, 22061, 38885, 45955, 59395, 72215, 93335, 101101, 110305, 130669, 154427, 171397, 242671, 505505, 653345, 772135, 856985, 1199779, 1213355, 1698697, 1885367, 2228161, 5998895, 8493485, 9426835, 11140805, 13197569, 15597127, 24509771, 65987845, 77985635, 122548855, 171568397, 857841985]

約数ペア:

[(1, 857841985), (5, 171568397), (7, 122548855), (11, 77985635), (13, 65987845), (35, 24509771), (55, 15597127), (65, 13197569), (77, 11140805), (91, 9426835), (101, 8493485), (143, 5998895), (385, 2228161), (455, 1885367), (505, 1698697), (707, 1213355), (715, 1199779), (1001, 856985), (1111, 772135), (1313, 653345), (1697, 505505), (3535, 242671), (5005, 171397), (5555, 154427), (6565, 130669), (7777, 110305), (8485, 101101), (9191, 93335), (11879, 72215), (14443, 59395), (18667, 45955), (22061, 38885)]