819580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{953}}^1$

素因数の和:1005

約数の個数: 24

約数和(自身を含む): 1762992

約数和(自身を除く): 943412

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 953, 1906, 3812, 4765, 9530, 19060, 40979, 81958, 163916, 204895, 409790, 819580]

約数ペア:

[(1, 819580), (2, 409790), (4, 204895), (5, 163916), (10, 81958), (20, 40979), (43, 19060), (86, 9530), (172, 4765), (215, 3812), (430, 1906), (860, 953)]