19723743

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{18731}}^1$

素因数の和:18756

約数の個数: 20

約数和(自身を含む): 31732008

約数和(自身を除く): 12008265

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 18731, 56193, 168579, 243503, 505737, 730509, 1517211, 2191527, 6574581, 19723743]

約数ペア:

[(1, 19723743), (3, 6574581), (9, 2191527), (13, 1517211), (27, 730509), (39, 505737), (81, 243503), (117, 168579), (351, 56193), (1053, 18731)]