19815111

素因数分解:

$3^4\times {\mathrm{223}}^1\times {\mathrm{1097}}^1$

素因数の和:1332

約数の個数: 20

約数和(自身を含む): 29760192

約数和(自身を除く): 9945081

約数列:

[1, 3, 9, 27, 81, 223, 669, 1097, 2007, 3291, 6021, 9873, 18063, 29619, 88857, 244631, 733893, 2201679, 6605037, 19815111]

約数ペア:

[(1, 19815111), (3, 6605037), (9, 2201679), (27, 733893), (81, 244631), (223, 88857), (669, 29619), (1097, 18063), (2007, 9873), (3291, 6021)]