21497853

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{3511}}^1$

素因数の和:3684

約数の個数: 16

約数和(自身を含む): 31074176

約数和(自身を除く): 9576323

約数列:

[1, 3, 13, 39, 157, 471, 2041, 3511, 6123, 10533, 45643, 136929, 551227, 1653681, 7165951, 21497853]

約数ペア:

[(1, 21497853), (3, 7165951), (13, 1653681), (39, 551227), (157, 136929), (471, 45643), (2041, 10533), (3511, 6123)]