20639944

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{198461}}^1$

素因数の和:198480

約数の個数: 16

約数和(自身を含む): 41677020

約数和(自身を除く): 21037076

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 198461, 396922, 793844, 1587688, 2579993, 5159986, 10319972, 20639944]

約数ペア:

[(1, 20639944), (2, 10319972), (4, 5159986), (8, 2579993), (13, 1587688), (26, 793844), (52, 396922), (104, 198461)]