81141580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{312083}}^1$

素因数の和:312105

約数の個数: 24

約数和(自身を含む): 183505392

約数和(自身を除く): 102363812

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 312083, 624166, 1248332, 1560415, 3120830, 4057079, 6241660, 8114158, 16228316, 20285395, 40570790, 81141580]

約数ペア:

[(1, 81141580), (2, 40570790), (4, 20285395), (5, 16228316), (10, 8114158), (13, 6241660), (20, 4057079), (26, 3120830), (52, 1560415), (65, 1248332), (130, 624166), (260, 312083)]