81178860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193283}}^1$

素因数の和:193302

約数の個数: 48

約数和(自身を含む): 259773696

約数和(自身を除く): 178594836

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 193283, 386566, 579849, 773132, 966415, 1159698, 1352981, 1932830, 2319396, 2705962, 2899245, 3865660, 4058943, 5411924, 5798490, 6764905, 8117886, 11596980, 13529810, 16235772, 20294715, 27059620, 40589430, 81178860]

約数ペア:

[(1, 81178860), (2, 40589430), (3, 27059620), (4, 20294715), (5, 16235772), (6, 13529810), (7, 11596980), (10, 8117886), (12, 6764905), (14, 5798490), (15, 5411924), (20, 4058943), (21, 3865660), (28, 2899245), (30, 2705962), (35, 2319396), (42, 1932830), (60, 1352981), (70, 1159698), (84, 966415), (105, 773132), (140, 579849), (210, 386566), (420, 193283)]