20638005

素因数分解:

$3^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{5077}}^1$

素因数の和:5356

約数の個数: 16

約数和(自身を含む): 33149184

約数和(自身を除く): 12511179

約数列:

[1, 3, 5, 15, 271, 813, 1355, 4065, 5077, 15231, 25385, 76155, 1375867, 4127601, 6879335, 20638005]

約数ペア:

[(1, 20638005), (3, 6879335), (5, 4127601), (15, 1375867), (271, 76155), (813, 25385), (1355, 15231), (4065, 5077)]