21782725

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:957

約数の個数: 24

約数和(自身を含む): 28873152

約数和(自身を除く): 7090427

約数列:

[1, 5, 23, 25, 43, 115, 215, 575, 881, 989, 1075, 4405, 4945, 20263, 22025, 24725, 37883, 101315, 189415, 506575, 871309, 947075, 4356545, 21782725]

約数ペア:

[(1, 21782725), (5, 4356545), (23, 947075), (25, 871309), (43, 506575), (115, 189415), (215, 101315), (575, 37883), (881, 24725), (989, 22025), (1075, 20263), (4405, 4945)]