20918210

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{48647}}^1$

素因数の和:48697

約数の個数: 16

約数和(自身を含む): 38529216

約数和(自身を除く): 17611006

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 48647, 97294, 243235, 486470, 2091821, 4183642, 10459105, 20918210]

約数ペア:

[(1, 20918210), (2, 10459105), (5, 4183642), (10, 2091821), (43, 486470), (86, 243235), (215, 97294), (430, 48647)]