31531175

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{439}}^1$

素因数の和:492

約数の個数: 36

約数和(自身を含む): 44930160

約数和(自身を除く): 13398985

約数列:

[1, 5, 13, 17, 25, 65, 85, 169, 221, 325, 425, 439, 845, 1105, 2195, 2873, 4225, 5525, 5707, 7463, 10975, 14365, 28535, 37315, 71825, 74191, 97019, 142675, 186575, 370955, 485095, 1261247, 1854775, 2425475, 6306235, 31531175]

約数ペア:

[(1, 31531175), (5, 6306235), (13, 2425475), (17, 1854775), (25, 1261247), (65, 485095), (85, 370955), (169, 186575), (221, 142675), (325, 97019), (425, 74191), (439, 71825), (845, 37315), (1105, 28535), (2195, 14365), (2873, 10975), (4225, 7463), (5525, 5707)]