20217575

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5023}}^1$

素因数の和:5063

約数の個数: 24

約数和(自身を含む): 29902848

約数和(自身を除く): 9685273

約数列:

[1, 5, 7, 23, 25, 35, 115, 161, 175, 575, 805, 4025, 5023, 25115, 35161, 115529, 125575, 175805, 577645, 808703, 879025, 2888225, 4043515, 20217575]

約数ペア:

[(1, 20217575), (5, 4043515), (7, 2888225), (23, 879025), (25, 808703), (35, 577645), (115, 175805), (161, 125575), (175, 115529), (575, 35161), (805, 25115), (4025, 5023)]