21238090

素因数分解:

$2^1\times 5^1\times {\mathrm{919}}^1\times {\mathrm{2311}}^1$

素因数の和:3237

約数の個数: 16

約数和(自身を含む): 38286720

約数和(自身を除く): 17048630

約数列:

[1, 2, 5, 10, 919, 1838, 2311, 4595, 4622, 9190, 11555, 23110, 2123809, 4247618, 10619045, 21238090]

約数ペア:

[(1, 21238090), (2, 10619045), (5, 4247618), (10, 2123809), (919, 23110), (1838, 11555), (2311, 9190), (4595, 4622)]