21719260

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37447}}^1$

素因数の和:37485

約数の個数: 24

約数和(自身を含む): 47184480

約数和(自身を除く): 25465220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 37447, 74894, 149788, 187235, 374470, 748940, 1085963, 2171926, 4343852, 5429815, 10859630, 21719260]

約数ペア:

[(1, 21719260), (2, 10859630), (4, 5429815), (5, 4343852), (10, 2171926), (20, 1085963), (29, 748940), (58, 374470), (116, 187235), (145, 149788), (290, 74894), (580, 37447)]