216405575

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{2711}}^1$

素因数の和:2855

約数の個数: 24

約数和(自身を含む): 279791616

約数和(自身を除く): 63386041

約数列:

[1, 5, 25, 31, 103, 155, 515, 775, 2575, 2711, 3193, 13555, 15965, 67775, 79825, 84041, 279233, 420205, 1396165, 2101025, 6980825, 8656223, 43281115, 216405575]

約数ペア:

[(1, 216405575), (5, 43281115), (25, 8656223), (31, 6980825), (103, 2101025), (155, 1396165), (515, 420205), (775, 279233), (2575, 84041), (2711, 79825), (3193, 67775), (13555, 15965)]