81216420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{1353607}}^1$

素因数の和:1353619

約数の個数: 24

約数和(自身を含む): 227406144

約数和(自身を除く): 146189724

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 1353607, 2707214, 4060821, 5414428, 6768035, 8121642, 13536070, 16243284, 20304105, 27072140, 40608210, 81216420]

約数ペア:

[(1, 81216420), (2, 40608210), (3, 27072140), (4, 20304105), (5, 16243284), (6, 13536070), (10, 8121642), (12, 6768035), (15, 5414428), (20, 4060821), (30, 2707214), (60, 1353607)]