21288380

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{18041}}^1$

素因数の和:18109

約数の個数: 24

約数和(自身を含む): 45465840

約数和(自身を除く): 24177460

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 18041, 36082, 72164, 90205, 180410, 360820, 1064419, 2128838, 4257676, 5322095, 10644190, 21288380]

約数ペア:

[(1, 21288380), (2, 10644190), (4, 5322095), (5, 4257676), (10, 2128838), (20, 1064419), (59, 360820), (118, 180410), (236, 90205), (295, 72164), (590, 36082), (1180, 18041)]