28899520

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6947}}^1$

素因数の和:6977

約数の個数: 56

約数和(自身を含む): 74121264

約数和(自身を除く): 45221744

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 6947, 13894, 27788, 34735, 55576, 69470, 90311, 111152, 138940, 180622, 222304, 277880, 361244, 444608, 451555, 555760, 722488, 903110, 1111520, 1444976, 1806220, 2223040, 2889952, 3612440, 5779904, 7224880, 14449760, 28899520]

約数ペア:

[(1, 28899520), (2, 14449760), (4, 7224880), (5, 5779904), (8, 3612440), (10, 2889952), (13, 2223040), (16, 1806220), (20, 1444976), (26, 1111520), (32, 903110), (40, 722488), (52, 555760), (64, 451555), (65, 444608), (80, 361244), (104, 277880), (130, 222304), (160, 180622), (208, 138940), (260, 111152), (320, 90311), (416, 69470), (520, 55576), (832, 34735), (1040, 27788), (2080, 13894), (4160, 6947)]