21059310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{9887}}^1$

素因数の和:9968

約数の個数: 32

約数和(自身を含む): 51259392

約数和(自身を除く): 30200082

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 71, 142, 213, 355, 426, 710, 1065, 2130, 9887, 19774, 29661, 49435, 59322, 98870, 148305, 296610, 701977, 1403954, 2105931, 3509885, 4211862, 7019770, 10529655, 21059310]

約数ペア:

[(1, 21059310), (2, 10529655), (3, 7019770), (5, 4211862), (6, 3509885), (10, 2105931), (15, 1403954), (30, 701977), (71, 296610), (142, 148305), (213, 98870), (355, 59322), (426, 49435), (710, 29661), (1065, 19774), (2130, 9887)]