28806680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{102881}}^1$

素因数の和:102899

約数の個数: 32

約数和(自身を含む): 74075040

約数和(自身を除く): 45268360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 102881, 205762, 411524, 514405, 720167, 823048, 1028810, 1440334, 2057620, 2880668, 3600835, 4115240, 5761336, 7201670, 14403340, 28806680]

約数ペア:

[(1, 28806680), (2, 14403340), (4, 7201670), (5, 5761336), (7, 4115240), (8, 3600835), (10, 2880668), (14, 2057620), (20, 1440334), (28, 1028810), (35, 823048), (40, 720167), (56, 514405), (70, 411524), (140, 205762), (280, 102881)]