15678216981

素因数分解:

$3^3\times 7^1\times {\mathrm{7219}}^1\times {\mathrm{11491}}^1$

素因数の和:18726

約数の個数: 32

約数和(自身を含む): 26551116800

約数和(自身を除く): 10872899819

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 7219, 11491, 21657, 34473, 50533, 64971, 80437, 103419, 151599, 194913, 241311, 310257, 454797, 723933, 1364391, 2171799, 82953529, 248860587, 580674703, 746581761, 1742024109, 2239745283, 5226072327, 15678216981]

約数ペア:

[(1, 15678216981), (3, 5226072327), (7, 2239745283), (9, 1742024109), (21, 746581761), (27, 580674703), (63, 248860587), (189, 82953529), (7219, 2171799), (11491, 1364391), (21657, 723933), (34473, 454797), (50533, 310257), (64971, 241311), (80437, 194913), (103419, 151599)]