20907575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2797}}^1$

素因数の和:2843

約数の個数: 24

約数和(自身を含む): 29143968

約数和(自身を除く): 8236393

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2797, 7475, 13985, 36361, 64331, 69925, 181805, 321655, 836303, 909025, 1608275, 4181515, 20907575]

約数ペア:

[(1, 20907575), (5, 4181515), (13, 1608275), (23, 909025), (25, 836303), (65, 321655), (115, 181805), (299, 69925), (325, 64331), (575, 36361), (1495, 13985), (2797, 7475)]