21494240

素因数分解:

$2^5\times 5^1\times {\mathrm{134339}}^1$

素因数の和:134354

約数の個数: 24

約数和(自身を含む): 50780520

約数和(自身を除く): 29286280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 134339, 268678, 537356, 671695, 1074712, 1343390, 2149424, 2686780, 4298848, 5373560, 10747120, 21494240]

約数ペア:

[(1, 21494240), (2, 10747120), (4, 5373560), (5, 4298848), (8, 2686780), (10, 2149424), (16, 1343390), (20, 1074712), (32, 671695), (40, 537356), (80, 268678), (160, 134339)]