18620037

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:199

約数の個数: 40

約数和(自身を含む): 29225856

約数和(自身を除く): 10605819

約数列:

[1, 3, 9, 27, 47, 67, 73, 81, 141, 201, 219, 423, 603, 657, 1269, 1809, 1971, 3149, 3431, 3807, 4891, 5427, 5913, 9447, 10293, 14673, 28341, 30879, 44019, 85023, 92637, 132057, 229877, 255069, 277911, 396171, 689631, 2068893, 6206679, 18620037]

約数ペア:

[(1, 18620037), (3, 6206679), (9, 2068893), (27, 689631), (47, 396171), (67, 277911), (73, 255069), (81, 229877), (141, 132057), (201, 92637), (219, 85023), (423, 44019), (603, 30879), (657, 28341), (1269, 14673), (1809, 10293), (1971, 9447), (3149, 5913), (3431, 5427), (3807, 4891)]