19718883

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{7853}}^1$

素因数の和:7896

約数の個数: 20

約数和(自身を含む): 30410688

約数和(自身を除く): 10691805

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 7853, 23559, 70677, 212031, 243443, 636093, 730329, 2190987, 6572961, 19718883]

約数ペア:

[(1, 19718883), (3, 6572961), (9, 2190987), (27, 730329), (31, 636093), (81, 243443), (93, 212031), (279, 70677), (837, 23559), (2511, 7853)]