81398709

素因数分解:

$3^3\times 7^1\times {\mathrm{599}}^1\times {\mathrm{719}}^1$

素因数の和:1334

約数の個数: 32

約数和(自身を含む): 138240000

約数和(自身を除く): 56841291

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 599, 719, 1797, 2157, 4193, 5033, 5391, 6471, 12579, 15099, 16173, 19413, 37737, 45297, 113211, 135891, 430681, 1292043, 3014767, 3876129, 9044301, 11628387, 27132903, 81398709]

約数ペア:

[(1, 81398709), (3, 27132903), (7, 11628387), (9, 9044301), (21, 3876129), (27, 3014767), (63, 1292043), (189, 430681), (599, 135891), (719, 113211), (1797, 45297), (2157, 37737), (4193, 19413), (5033, 16173), (5391, 15099), (6471, 12579)]