2581640

素因数分解:

$2^3\times 5^1\times {\mathrm{233}}^1\times {\mathrm{277}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 5854680

約数和(自身を除く): 3273040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 233, 277, 466, 554, 932, 1108, 1165, 1385, 1864, 2216, 2330, 2770, 4660, 5540, 9320, 11080, 64541, 129082, 258164, 322705, 516328, 645410, 1290820, 2581640]

約数ペア:

[(1, 2581640), (2, 1290820), (4, 645410), (5, 516328), (8, 322705), (10, 258164), (20, 129082), (40, 64541), (233, 11080), (277, 9320), (466, 5540), (554, 4660), (932, 2770), (1108, 2330), (1165, 2216), (1385, 1864)]