20121218

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{1847}}^1$

素因数の和:2281

約数の個数: 16

約数和(自身を含む): 32598720

約数和(自身を除く): 12477502

約数列:

[1, 2, 13, 26, 419, 838, 1847, 3694, 5447, 10894, 24011, 48022, 773893, 1547786, 10060609, 20121218]

約数ペア:

[(1, 20121218), (2, 10060609), (13, 1547786), (26, 773893), (419, 48022), (838, 24011), (1847, 10894), (3694, 5447)]