21054925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{107}}^1\times {\mathrm{463}}^1$

素因数の和:597

約数の個数: 24

約数和(自身を含む): 27962496

約数和(自身を除く): 6907571

約数列:

[1, 5, 17, 25, 85, 107, 425, 463, 535, 1819, 2315, 2675, 7871, 9095, 11575, 39355, 45475, 49541, 196775, 247705, 842197, 1238525, 4210985, 21054925]

約数ペア:

[(1, 21054925), (5, 4210985), (17, 1238525), (25, 842197), (85, 247705), (107, 196775), (425, 49541), (463, 45475), (535, 39355), (1819, 11575), (2315, 9095), (2675, 7871)]