20509220

素因数分解:

$2^2\times 5^1\times {\mathrm{787}}^1\times {\mathrm{1303}}^1$

素因数の和:2099

約数の個数: 24

約数和(自身を含む): 43157184

約数和(自身を除く): 22647964

約数列:

[1, 2, 4, 5, 10, 20, 787, 1303, 1574, 2606, 3148, 3935, 5212, 6515, 7870, 13030, 15740, 26060, 1025461, 2050922, 4101844, 5127305, 10254610, 20509220]

約数ペア:

[(1, 20509220), (2, 10254610), (4, 5127305), (5, 4101844), (10, 2050922), (20, 1025461), (787, 26060), (1303, 15740), (1574, 13030), (2606, 7870), (3148, 6515), (3935, 5212)]