21593975

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{269}}^1$

素因数の和:324

約数の個数: 36

約数和(自身を含む): 30634200

約数和(自身を除く): 9040225

約数列:

[1, 5, 13, 19, 25, 65, 95, 169, 247, 269, 325, 475, 845, 1235, 1345, 3211, 3497, 4225, 5111, 6175, 6725, 16055, 17485, 25555, 45461, 66443, 80275, 87425, 127775, 227305, 332215, 863759, 1136525, 1661075, 4318795, 21593975]

約数ペア:

[(1, 21593975), (5, 4318795), (13, 1661075), (19, 1136525), (25, 863759), (65, 332215), (95, 227305), (169, 127775), (247, 87425), (269, 80275), (325, 66443), (475, 45461), (845, 25555), (1235, 17485), (1345, 16055), (3211, 6725), (3497, 6175), (4225, 5111)]