21890224

素因数分解:

$2^4\times {\mathrm{971}}^1\times {\mathrm{1409}}^1$

素因数の和:2388

約数の個数: 20

約数和(自身を含む): 42486120

約数和(自身を除く): 20595896

約数列:

[1, 2, 4, 8, 16, 971, 1409, 1942, 2818, 3884, 5636, 7768, 11272, 15536, 22544, 1368139, 2736278, 5472556, 10945112, 21890224]

約数ペア:

[(1, 21890224), (2, 10945112), (4, 5472556), (8, 2736278), (16, 1368139), (971, 22544), (1409, 15536), (1942, 11272), (2818, 7768), (3884, 5636)]