81939620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{585283}}^1$

素因数の和:585299

約数の個数: 24

約数和(自身を含む): 196655424

約数和(自身を除く): 114715804

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 585283, 1170566, 2341132, 2926415, 4096981, 5852830, 8193962, 11705660, 16387924, 20484905, 40969810, 81939620]

約数ペア:

[(1, 81939620), (2, 40969810), (4, 20484905), (5, 16387924), (7, 11705660), (10, 8193962), (14, 5852830), (20, 4096981), (28, 2926415), (35, 2341132), (70, 1170566), (140, 585283)]