20201775

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{521}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 37283328

約数和(自身を除く): 17081553

約数列:

[1, 3, 5, 11, 15, 25, 33, 47, 55, 75, 141, 165, 235, 275, 517, 521, 705, 825, 1175, 1551, 1563, 2585, 2605, 3525, 5731, 7755, 7815, 12925, 13025, 17193, 24487, 28655, 38775, 39075, 73461, 85965, 122435, 143275, 269357, 367305, 429825, 612175, 808071, 1346785, 1836525, 4040355, 6733925, 20201775]

約数ペア:

[(1, 20201775), (3, 6733925), (5, 4040355), (11, 1836525), (15, 1346785), (25, 808071), (33, 612175), (47, 429825), (55, 367305), (75, 269357), (141, 143275), (165, 122435), (235, 85965), (275, 73461), (517, 39075), (521, 38775), (705, 28655), (825, 24487), (1175, 17193), (1551, 13025), (1563, 12925), (2585, 7815), (2605, 7755), (3525, 5731)]