21130695

素因数分解:

$3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{1171}}^1$

素因数の和:1583

約数の個数: 24

約数和(自身を含む): 36749232

約数和(自身を除く): 15618537

約数列:

[1, 3, 5, 9, 15, 45, 401, 1171, 1203, 2005, 3513, 3609, 5855, 6015, 10539, 17565, 18045, 52695, 469571, 1408713, 2347855, 4226139, 7043565, 21130695]

約数ペア:

[(1, 21130695), (3, 7043565), (5, 4226139), (9, 2347855), (15, 1408713), (45, 469571), (401, 52695), (1171, 18045), (1203, 17565), (2005, 10539), (3513, 6015), (3609, 5855)]