81665350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{125639}}^1$

素因数の和:125664

約数の個数: 24

約数和(自身を含む): 163583280

約数和(自身を除く): 81917930

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 125639, 251278, 628195, 1256390, 1633307, 3140975, 3266614, 6281950, 8166535, 16333070, 40832675, 81665350]

約数ペア:

[(1, 81665350), (2, 40832675), (5, 16333070), (10, 8166535), (13, 6281950), (25, 3266614), (26, 3140975), (50, 1633307), (65, 1256390), (130, 628195), (325, 251278), (650, 125639)]