20299225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{821}}^1$

素因数の和:897

約数の個数: 24

約数和(自身を含む): 26908992

約数和(自身を除く): 6609767

約数列:

[1, 5, 23, 25, 43, 115, 215, 575, 821, 989, 1075, 4105, 4945, 18883, 20525, 24725, 35303, 94415, 176515, 472075, 811969, 882575, 4059845, 20299225]

約数ペア:

[(1, 20299225), (5, 4059845), (23, 882575), (25, 811969), (43, 472075), (115, 176515), (215, 94415), (575, 35303), (821, 24725), (989, 20525), (1075, 18883), (4105, 4945)]