20640570

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{11279}}^1$

素因数の和:11350

約数の個数: 32

約数和(自身を含む): 50353920

約数和(自身を除く): 29713350

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 61, 122, 183, 305, 366, 610, 915, 1830, 11279, 22558, 33837, 56395, 67674, 112790, 169185, 338370, 688019, 1376038, 2064057, 3440095, 4128114, 6880190, 10320285, 20640570]

約数ペア:

[(1, 20640570), (2, 10320285), (3, 6880190), (5, 4128114), (6, 3440095), (10, 2064057), (15, 1376038), (30, 688019), (61, 338370), (122, 169185), (183, 112790), (305, 67674), (366, 56395), (610, 33837), (915, 22558), (1830, 11279)]