256468575

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{479}}^1$

素因数の和:573

約数の個数: 72

約数和(自身を含む): 474969600

約数和(自身を除く): 218501025

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 59, 75, 121, 165, 177, 275, 295, 363, 479, 605, 649, 825, 885, 1437, 1475, 1815, 1947, 2395, 3025, 3245, 4425, 5269, 7139, 7185, 9075, 9735, 11975, 15807, 16225, 21417, 26345, 28261, 35695, 35925, 48675, 57959, 79035, 84783, 107085, 131725, 141305, 173877, 178475, 289795, 310871, 395175, 423915, 535425, 706525, 869385, 932613, 1448975, 1554355, 2119575, 3419581, 4346925, 4663065, 7771775, 10258743, 17097905, 23315325, 51293715, 85489525, 256468575]

約数ペア:

[(1, 256468575), (3, 85489525), (5, 51293715), (11, 23315325), (15, 17097905), (25, 10258743), (33, 7771775), (55, 4663065), (59, 4346925), (75, 3419581), (121, 2119575), (165, 1554355), (177, 1448975), (275, 932613), (295, 869385), (363, 706525), (479, 535425), (605, 423915), (649, 395175), (825, 310871), (885, 289795), (1437, 178475), (1475, 173877), (1815, 141305), (1947, 131725), (2395, 107085), (3025, 84783), (3245, 79035), (4425, 57959), (5269, 48675), (7139, 35925), (7185, 35695), (9075, 28261), (9735, 26345), (11975, 21417), (15807, 16225)]