639559485

素因数分解:

$3^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{18059}}^1$

素因数の和:18857

約数の個数: 24

約数和(自身を含む): 1110039840

約数和(自身を除く): 470480355

約数列:

[1, 3, 5, 9, 15, 45, 787, 2361, 3935, 7083, 11805, 18059, 35415, 54177, 90295, 162531, 270885, 812655, 14212433, 42637299, 71062165, 127911897, 213186495, 639559485]

約数ペア:

[(1, 639559485), (3, 213186495), (5, 127911897), (9, 71062165), (15, 42637299), (45, 14212433), (787, 812655), (2361, 270885), (3935, 162531), (7083, 90295), (11805, 54177), (18059, 35415)]