20856459

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{1327}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 31107072

約数和(自身を除く): 10250613

約数列:

[1, 3, 13, 31, 39, 93, 169, 403, 507, 1209, 1327, 3981, 5239, 15717, 17251, 41137, 51753, 123411, 224263, 534781, 672789, 1604343, 6952153, 20856459]

約数ペア:

[(1, 20856459), (3, 6952153), (13, 1604343), (31, 672789), (39, 534781), (93, 224263), (169, 123411), (403, 51753), (507, 41137), (1209, 17251), (1327, 15717), (3981, 5239)]