21206575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2837}}^1$

素因数の和:2883

約数の個数: 24

約数和(自身を含む): 29560608

約数和(自身を除く): 8354033

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2837, 7475, 14185, 36881, 65251, 70925, 184405, 326255, 848263, 922025, 1631275, 4241315, 21206575]

約数ペア:

[(1, 21206575), (5, 4241315), (13, 1631275), (23, 922025), (25, 848263), (65, 326255), (115, 184405), (299, 70925), (325, 65251), (575, 36881), (1495, 14185), (2837, 7475)]