3999620

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{6451}}^1$

素因数の和:6491

約数の個数: 24

約数和(自身を含む): 8671488

約数和(自身を除く): 4671868

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 6451, 12902, 25804, 32255, 64510, 129020, 199981, 399962, 799924, 999905, 1999810, 3999620]

約数ペア:

[(1, 3999620), (2, 1999810), (4, 999905), (5, 799924), (10, 399962), (20, 199981), (31, 129020), (62, 64510), (124, 32255), (155, 25804), (310, 12902), (620, 6451)]