19801215

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{62861}}^1$

素因数の和:62879

約数の個数: 24

約数和(自身を含む): 39225888

約数和(自身を除く): 19424673

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 62861, 188583, 314305, 440027, 565749, 942915, 1320081, 2200135, 2828745, 3960243, 6600405, 19801215]

約数ペア:

[(1, 19801215), (3, 6600405), (5, 3960243), (7, 2828745), (9, 2200135), (15, 1320081), (21, 942915), (35, 565749), (45, 440027), (63, 314305), (105, 188583), (315, 62861)]