20002525

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{809}}^1$

素因数の和:885

約数の個数: 24

約数和(自身を含む): 26516160

約数和(自身を除く): 6513635

約数列:

[1, 5, 23, 25, 43, 115, 215, 575, 809, 989, 1075, 4045, 4945, 18607, 20225, 24725, 34787, 93035, 173935, 465175, 800101, 869675, 4000505, 20002525]

約数ペア:

[(1, 20002525), (5, 4000505), (23, 869675), (25, 800101), (43, 465175), (115, 173935), (215, 93035), (575, 34787), (809, 24725), (989, 20225), (1075, 18607), (4045, 4945)]