18778888989

素因数分解:

$3^3\times 7^1\times {\mathrm{487}}^1\times {\mathrm{204023}}^1$

素因数の和:204526

約数の個数: 32

約数和(自身を含む): 31860387840

約数和(自身を除く): 13081498851

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 487, 1461, 3409, 4383, 10227, 13149, 30681, 92043, 204023, 612069, 1428161, 1836207, 4284483, 5508621, 12853449, 38560347, 99359201, 298077603, 695514407, 894232809, 2086543221, 2682698427, 6259629663, 18778888989]

約数ペア:

[(1, 18778888989), (3, 6259629663), (7, 2682698427), (9, 2086543221), (21, 894232809), (27, 695514407), (63, 298077603), (189, 99359201), (487, 38560347), (1461, 12853449), (3409, 5508621), (4383, 4284483), (10227, 1836207), (13149, 1428161), (30681, 612069), (92043, 204023)]