20336920

素因数分解:

$2^3\times 5^1\times {\mathrm{389}}^1\times {\mathrm{1307}}^1$

素因数の和:1707

約数の個数: 32

約数和(自身を含む): 45910800

約数和(自身を除く): 25573880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 389, 778, 1307, 1556, 1945, 2614, 3112, 3890, 5228, 6535, 7780, 10456, 13070, 15560, 26140, 52280, 508423, 1016846, 2033692, 2542115, 4067384, 5084230, 10168460, 20336920]

約数ペア:

[(1, 20336920), (2, 10168460), (4, 5084230), (5, 4067384), (8, 2542115), (10, 2033692), (20, 1016846), (40, 508423), (389, 52280), (778, 26140), (1307, 15560), (1556, 13070), (1945, 10456), (2614, 7780), (3112, 6535), (3890, 5228)]