1331020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1091}}^1$

素因数の和:1161

約数の個数: 24

約数和(自身を含む): 2843568

約数和(自身を除く): 1512548

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1091, 1220, 2182, 4364, 5455, 10910, 21820, 66551, 133102, 266204, 332755, 665510, 1331020]

約数ペア:

[(1, 1331020), (2, 665510), (4, 332755), (5, 266204), (10, 133102), (20, 66551), (61, 21820), (122, 10910), (244, 5455), (305, 4364), (610, 2182), (1091, 1220)]