561567400

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^2\times {\mathrm{557}}^1$

素因数の和:715

約数の個数: 72

約数和(自身を含む): 1326670110

約数和(自身を除く): 765102710

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 142, 200, 284, 355, 557, 568, 710, 1114, 1420, 1775, 2228, 2785, 2840, 3550, 4456, 5041, 5570, 7100, 10082, 11140, 13925, 14200, 20164, 22280, 25205, 27850, 39547, 40328, 50410, 55700, 79094, 100820, 111400, 126025, 158188, 197735, 201640, 252050, 316376, 395470, 504100, 790940, 988675, 1008200, 1581880, 1977350, 2807837, 3954700, 5615674, 7909400, 11231348, 14039185, 22462696, 28078370, 56156740, 70195925, 112313480, 140391850, 280783700, 561567400]

約数ペア:

[(1, 561567400), (2, 280783700), (4, 140391850), (5, 112313480), (8, 70195925), (10, 56156740), (20, 28078370), (25, 22462696), (40, 14039185), (50, 11231348), (71, 7909400), (100, 5615674), (142, 3954700), (200, 2807837), (284, 1977350), (355, 1581880), (557, 1008200), (568, 988675), (710, 790940), (1114, 504100), (1420, 395470), (1775, 316376), (2228, 252050), (2785, 201640), (2840, 197735), (3550, 158188), (4456, 126025), (5041, 111400), (5570, 100820), (7100, 79094), (10082, 55700), (11140, 50410), (13925, 40328), (14200, 39547), (20164, 27850), (22280, 25205)]