81509225

素因数分解:

$5^2\times 7^1\times {\mathrm{233}}^1\times {\mathrm{1999}}^1$

素因数の和:2249

約数の個数: 24

約数和(自身を含む): 116064000

約数和(自身を除く): 34554775

約数列:

[1, 5, 7, 25, 35, 175, 233, 1165, 1631, 1999, 5825, 8155, 9995, 13993, 40775, 49975, 69965, 349825, 465767, 2328835, 3260369, 11644175, 16301845, 81509225]

約数ペア:

[(1, 81509225), (5, 16301845), (7, 11644175), (25, 3260369), (35, 2328835), (175, 465767), (233, 349825), (1165, 69965), (1631, 49975), (1999, 40775), (5825, 13993), (8155, 9995)]