641860

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{479}}^1$

素因数の和:555

約数の個数: 24

約数和(自身を含む): 1370880

約数和(自身を除く): 729020

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 479, 670, 958, 1340, 1916, 2395, 4790, 9580, 32093, 64186, 128372, 160465, 320930, 641860]

約数ペア:

[(1, 641860), (2, 320930), (4, 160465), (5, 128372), (10, 64186), (20, 32093), (67, 9580), (134, 4790), (268, 2395), (335, 1916), (479, 1340), (670, 958)]