81399290

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{283}}^1\times {\mathrm{587}}^1$

素因数の和:891

約数の個数: 48

約数和(自身を含む): 171333792

約数和(自身を除く): 89934502

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 245, 283, 490, 566, 587, 1174, 1415, 1981, 2830, 2935, 3962, 4109, 5870, 8218, 9905, 13867, 19810, 20545, 27734, 28763, 41090, 57526, 69335, 138670, 143815, 166121, 287630, 332242, 830605, 1162847, 1661210, 2325694, 5814235, 8139929, 11628470, 16279858, 40699645, 81399290]

約数ペア:

[(1, 81399290), (2, 40699645), (5, 16279858), (7, 11628470), (10, 8139929), (14, 5814235), (35, 2325694), (49, 1661210), (70, 1162847), (98, 830605), (245, 332242), (283, 287630), (490, 166121), (566, 143815), (587, 138670), (1174, 69335), (1415, 57526), (1981, 41090), (2830, 28763), (2935, 27734), (3962, 20545), (4109, 19810), (5870, 13867), (8218, 9905)]