19015984

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91423}}^1$

素因数の和:91444

約数の個数: 20

約数和(自身を含む): 39678016

約数和(自身を除く): 20662032

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91423, 182846, 365692, 731384, 1188499, 1462768, 2376998, 4753996, 9507992, 19015984]

約数ペア:

[(1, 19015984), (2, 9507992), (4, 4753996), (8, 2376998), (13, 1462768), (16, 1188499), (26, 731384), (52, 365692), (104, 182846), (208, 91423)]