80080400

素因数分解:

$2^4\times 5^2\times {\mathrm{200201}}^1$

素因数の和:200219

約数の個数: 30

約数和(自身を含む): 192394122

約数和(自身を除く): 112313722

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 200201, 400402, 800804, 1001005, 1601608, 2002010, 3203216, 4004020, 5005025, 8008040, 10010050, 16016080, 20020100, 40040200, 80080400]

約数ペア:

[(1, 80080400), (2, 40040200), (4, 20020100), (5, 16016080), (8, 10010050), (10, 8008040), (16, 5005025), (20, 4004020), (25, 3203216), (40, 2002010), (50, 1601608), (80, 1001005), (100, 800804), (200, 400402), (400, 200201)]