28705929

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{22409}}^1$

素因数の和:22480

約数の個数: 16

約数和(自身を含む): 44461440

約数和(自身を除く): 15755511

約数列:

[1, 3, 7, 21, 61, 183, 427, 1281, 22409, 67227, 156863, 470589, 1366949, 4100847, 9568643, 28705929]

約数ペア:

[(1, 28705929), (3, 9568643), (7, 4100847), (21, 1366949), (61, 470589), (183, 156863), (427, 67227), (1281, 22409)]