20317941

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 36211968

約数和(自身を除く): 15894027

約数列:

[1, 3, 7, 9, 17, 21, 51, 61, 63, 119, 153, 183, 311, 357, 427, 549, 933, 1037, 1071, 1281, 2177, 2799, 3111, 3843, 5287, 6531, 7259, 9333, 15861, 18971, 19593, 21777, 37009, 47583, 56913, 65331, 111027, 132797, 170739, 322507, 333081, 398391, 967521, 1195173, 2257549, 2902563, 6772647, 20317941]

約数ペア:

[(1, 20317941), (3, 6772647), (7, 2902563), (9, 2257549), (17, 1195173), (21, 967521), (51, 398391), (61, 333081), (63, 322507), (119, 170739), (153, 132797), (183, 111027), (311, 65331), (357, 56913), (427, 47583), (549, 37009), (933, 21777), (1037, 19593), (1071, 18971), (1281, 15861), (2177, 9333), (2799, 7259), (3111, 6531), (3843, 5287)]