20158905

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5441}}^1$

素因数の和:5481

約数の個数: 32

約数和(自身を含む): 36570240

約数和(自身を除く): 16411335

約数列:

[1, 3, 5, 13, 15, 19, 39, 57, 65, 95, 195, 247, 285, 741, 1235, 3705, 5441, 16323, 27205, 70733, 81615, 103379, 212199, 310137, 353665, 516895, 1060995, 1343927, 1550685, 4031781, 6719635, 20158905]

約数ペア:

[(1, 20158905), (3, 6719635), (5, 4031781), (13, 1550685), (15, 1343927), (19, 1060995), (39, 516895), (57, 353665), (65, 310137), (95, 212199), (195, 103379), (247, 81615), (285, 70733), (741, 27205), (1235, 16323), (3705, 5441)]