19975505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{2029}}^1$

素因数の和:2224

約数の個数: 16

約数和(自身を含む): 26308800

約数和(自身を除く): 6333295

約数列:

[1, 5, 11, 55, 179, 895, 1969, 2029, 9845, 10145, 22319, 111595, 363191, 1815955, 3995101, 19975505]

約数ペア:

[(1, 19975505), (5, 3995101), (11, 1815955), (55, 363191), (179, 111595), (895, 22319), (1969, 10145), (2029, 9845)]