80471420

素因数分解:

$2^2\times 5^1\times {\mathrm{1627}}^1\times {\mathrm{2473}}^1$

素因数の和:4109

約数の個数: 24

約数和(自身を含む): 169162224

約数和(自身を除く): 88690804

約数列:

[1, 2, 4, 5, 10, 20, 1627, 2473, 3254, 4946, 6508, 8135, 9892, 12365, 16270, 24730, 32540, 49460, 4023571, 8047142, 16094284, 20117855, 40235710, 80471420]

約数ペア:

[(1, 80471420), (2, 40235710), (4, 20117855), (5, 16094284), (10, 8047142), (20, 4023571), (1627, 49460), (2473, 32540), (3254, 24730), (4946, 16270), (6508, 12365), (8135, 9892)]