81903575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{10957}}^1$

素因数の和:11003

約数の個数: 24

約数和(自身を含む): 114138528

約数和(自身を除く): 32234953

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 7475, 10957, 54785, 142441, 252011, 273925, 712205, 1260055, 3276143, 3561025, 6300275, 16380715, 81903575]

約数ペア:

[(1, 81903575), (5, 16380715), (13, 6300275), (23, 3561025), (25, 3276143), (65, 1260055), (115, 712205), (299, 273925), (325, 252011), (575, 142441), (1495, 54785), (7475, 10957)]