21780453591

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{662483}}^1$

素因数の和:662783

約数の個数: 24

約数和(自身を含む): 34001328816

約数和(自身を除く): 12220875225

約数列:

[1, 3, 9, 13, 39, 117, 281, 843, 2529, 3653, 10959, 32877, 662483, 1987449, 5962347, 8612279, 25836837, 77510511, 186157723, 558473169, 1675419507, 2420050399, 7260151197, 21780453591]

約数ペア:

[(1, 21780453591), (3, 7260151197), (9, 2420050399), (13, 1675419507), (39, 558473169), (117, 186157723), (281, 77510511), (843, 25836837), (2529, 8612279), (3653, 5962347), (10959, 1987449), (32877, 662483)]