19540845

素因数分解:

$3^7\times 5^1\times {\mathrm{1787}}^1$

素因数の和:1813

約数の個数: 32

約数和(自身を含む): 35187840

約数和(自身を除く): 15646995

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 729, 1215, 1787, 2187, 3645, 5361, 8935, 10935, 16083, 26805, 48249, 80415, 144747, 241245, 434241, 723735, 1302723, 2171205, 3908169, 6513615, 19540845]

約数ペア:

[(1, 19540845), (3, 6513615), (5, 3908169), (9, 2171205), (15, 1302723), (27, 723735), (45, 434241), (81, 241245), (135, 144747), (243, 80415), (405, 48249), (729, 26805), (1215, 16083), (1787, 10935), (2187, 8935), (3645, 5361)]