13581320

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1291}}^1$

素因数の和:1565

約数の個数: 32

約数和(自身を含む): 30697920

約数和(自身を除く): 17116600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1291, 1315, 2104, 2582, 2630, 5164, 5260, 6455, 10328, 10520, 12910, 25820, 51640, 339533, 679066, 1358132, 1697665, 2716264, 3395330, 6790660, 13581320]

約数ペア:

[(1, 13581320), (2, 6790660), (4, 3395330), (5, 2716264), (8, 1697665), (10, 1358132), (20, 679066), (40, 339533), (263, 51640), (526, 25820), (1052, 12910), (1291, 10520), (1315, 10328), (2104, 6455), (2582, 5260), (2630, 5164)]