20256800

素因数分解:

$2^5\times 5^2\times {\mathrm{25321}}^1$

素因数の和:25341

約数の個数: 36

約数和(自身を含む): 49453866

約数和(自身を除く): 29197066

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 25321, 50642, 101284, 126605, 202568, 253210, 405136, 506420, 633025, 810272, 1012840, 1266050, 2025680, 2532100, 4051360, 5064200, 10128400, 20256800]

約数ペア:

[(1, 20256800), (2, 10128400), (4, 5064200), (5, 4051360), (8, 2532100), (10, 2025680), (16, 1266050), (20, 1012840), (25, 810272), (32, 633025), (40, 506420), (50, 405136), (80, 253210), (100, 202568), (160, 126605), (200, 101284), (400, 50642), (800, 25321)]