278561530

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{1997}}^1$

素因数の和:2083

約数の個数: 64

約数和(自身を含む): 573985440

約数和(自身を除く): 295423910

約数列:

[1, 2, 5, 10, 13, 26, 29, 37, 58, 65, 74, 130, 145, 185, 290, 370, 377, 481, 754, 962, 1073, 1885, 1997, 2146, 2405, 3770, 3994, 4810, 5365, 9985, 10730, 13949, 19970, 25961, 27898, 51922, 57913, 69745, 73889, 115826, 129805, 139490, 147778, 259610, 289565, 369445, 579130, 738890, 752869, 960557, 1505738, 1921114, 2142781, 3764345, 4285562, 4802785, 7528690, 9605570, 10713905, 21427810, 27856153, 55712306, 139280765, 278561530]

約数ペア:

[(1, 278561530), (2, 139280765), (5, 55712306), (10, 27856153), (13, 21427810), (26, 10713905), (29, 9605570), (37, 7528690), (58, 4802785), (65, 4285562), (74, 3764345), (130, 2142781), (145, 1921114), (185, 1505738), (290, 960557), (370, 752869), (377, 738890), (481, 579130), (754, 369445), (962, 289565), (1073, 259610), (1885, 147778), (1997, 139490), (2146, 129805), (2405, 115826), (3770, 73889), (3994, 69745), (4810, 57913), (5365, 51922), (9985, 27898), (10730, 25961), (13949, 19970)]