28138825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{463}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 43497216

約数和(自身を除く): 15358391

約数列:

[1, 5, 11, 13, 17, 25, 55, 65, 85, 143, 187, 221, 275, 325, 425, 463, 715, 935, 1105, 2315, 2431, 3575, 4675, 5093, 5525, 6019, 7871, 11575, 12155, 25465, 30095, 39355, 60775, 66209, 86581, 102323, 127325, 150475, 196775, 331045, 432905, 511615, 1125553, 1655225, 2164525, 2558075, 5627765, 28138825]

約数ペア:

[(1, 28138825), (5, 5627765), (11, 2558075), (13, 2164525), (17, 1655225), (25, 1125553), (55, 511615), (65, 432905), (85, 331045), (143, 196775), (187, 150475), (221, 127325), (275, 102323), (325, 86581), (425, 66209), (463, 60775), (715, 39355), (935, 30095), (1105, 25465), (2315, 12155), (2431, 11575), (3575, 7871), (4675, 6019), (5093, 5525)]