21231399

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{24659}}^1$

素因数の和:24710

約数の個数: 16

約数和(自身を含む): 33143040

約数和(自身を除く): 11911641

約数列:

[1, 3, 7, 21, 41, 123, 287, 861, 24659, 73977, 172613, 517839, 1011019, 3033057, 7077133, 21231399]

約数ペア:

[(1, 21231399), (3, 7077133), (7, 3033057), (21, 1011019), (41, 517839), (123, 172613), (287, 73977), (861, 24659)]