22721420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{16001}}^1$

素因数の和:16081

約数の個数: 24

約数和(自身を含む): 48390048

約数和(自身を除く): 25668628

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 16001, 32002, 64004, 80005, 160010, 320020, 1136071, 2272142, 4544284, 5680355, 11360710, 22721420]

約数ペア:

[(1, 22721420), (2, 11360710), (4, 5680355), (5, 4544284), (10, 2272142), (20, 1136071), (71, 320020), (142, 160010), (284, 80005), (355, 64004), (710, 32002), (1420, 16001)]