28108575

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:345

約数の個数: 72

約数和(自身を含む): 56465136

約数和(自身を除く): 28356561

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 41, 45, 55, 75, 99, 123, 165, 205, 225, 275, 277, 369, 451, 495, 615, 825, 831, 1025, 1353, 1385, 1845, 2255, 2475, 2493, 3047, 3075, 4059, 4155, 6765, 6925, 9141, 9225, 11275, 11357, 12465, 15235, 20295, 20775, 27423, 33825, 34071, 45705, 56785, 62325, 76175, 101475, 102213, 124927, 137115, 170355, 228525, 283925, 374781, 511065, 624635, 685575, 851775, 1124343, 1873905, 2555325, 3123175, 5621715, 9369525, 28108575]

約数ペア:

[(1, 28108575), (3, 9369525), (5, 5621715), (9, 3123175), (11, 2555325), (15, 1873905), (25, 1124343), (33, 851775), (41, 685575), (45, 624635), (55, 511065), (75, 374781), (99, 283925), (123, 228525), (165, 170355), (205, 137115), (225, 124927), (275, 102213), (277, 101475), (369, 76175), (451, 62325), (495, 56785), (615, 45705), (825, 34071), (831, 33825), (1025, 27423), (1353, 20775), (1385, 20295), (1845, 15235), (2255, 12465), (2475, 11357), (2493, 11275), (3047, 9225), (3075, 9141), (4059, 6925), (4155, 6765)]