21597720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{179981}}^1$

素因数の和:179995

約数の個数: 32

約数和(自身を含む): 64793520

約数和(自身を除く): 43195800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 179981, 359962, 539943, 719924, 899905, 1079886, 1439848, 1799810, 2159772, 2699715, 3599620, 4319544, 5399430, 7199240, 10798860, 21597720]

約数ペア:

[(1, 21597720), (2, 10798860), (3, 7199240), (4, 5399430), (5, 4319544), (6, 3599620), (8, 2699715), (10, 2159772), (12, 1799810), (15, 1439848), (20, 1079886), (24, 899905), (30, 719924), (40, 539943), (60, 359962), (120, 179981)]