20427605

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11981}}^1$

素因数の和:12028

約数の個数: 16

約数和(自身を含む): 27606528

約数和(自身を除く): 7178923

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11981, 59905, 131791, 371411, 658955, 1857055, 4085521, 20427605]

約数ペア:

[(1, 20427605), (5, 4085521), (11, 1857055), (31, 658955), (55, 371411), (155, 131791), (341, 59905), (1705, 11981)]