21442220

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{12917}}^1$

素因数の和:13009

約数の個数: 24

約数和(自身を含む): 45574704

約数和(自身を除く): 24132484

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 12917, 25834, 51668, 64585, 129170, 258340, 1072111, 2144222, 4288444, 5360555, 10721110, 21442220]

約数ペア:

[(1, 21442220), (2, 10721110), (4, 5360555), (5, 4288444), (10, 2144222), (20, 1072111), (83, 258340), (166, 129170), (332, 64585), (415, 51668), (830, 25834), (1660, 12917)]