19894240

素因数分解:

$2^5\times 5^1\times {\mathrm{124339}}^1$

素因数の和:124354

約数の個数: 24

約数和(自身を含む): 47000520

約数和(自身を除く): 27106280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 124339, 248678, 497356, 621695, 994712, 1243390, 1989424, 2486780, 3978848, 4973560, 9947120, 19894240]

約数ペア:

[(1, 19894240), (2, 9947120), (4, 4973560), (5, 3978848), (8, 2486780), (10, 1989424), (16, 1243390), (20, 994712), (32, 621695), (40, 497356), (80, 248678), (160, 124339)]