20666751

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{167}}^1$

素因数の和:331

約数の個数: 32

約数和(自身を含む): 32514048

約数和(自身を除く): 11847297

約数列:

[1, 3, 7, 21, 71, 83, 167, 213, 249, 497, 501, 581, 1169, 1491, 1743, 3507, 5893, 11857, 13861, 17679, 35571, 41251, 41583, 82999, 97027, 123753, 248997, 291081, 984131, 2952393, 6888917, 20666751]

約数ペア:

[(1, 20666751), (3, 6888917), (7, 2952393), (21, 984131), (71, 291081), (83, 248997), (167, 123753), (213, 97027), (249, 82999), (497, 41583), (501, 41251), (581, 35571), (1169, 17679), (1491, 13861), (1743, 11857), (3507, 5893)]