21071900

素因数分解:

$2^2\times 5^2\times {\mathrm{210719}}^1$

素因数の和:210733

約数の個数: 18

約数和(自身を含む): 45726240

約数和(自身を除く): 24654340

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 210719, 421438, 842876, 1053595, 2107190, 4214380, 5267975, 10535950, 21071900]

約数ペア:

[(1, 21071900), (2, 10535950), (4, 5267975), (5, 4214380), (10, 2107190), (20, 1053595), (25, 842876), (50, 421438), (100, 210719)]