20996493

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1499}}^1$

素因数の和:1561

約数の個数: 32

約数和(自身を含む): 34560000

約数和(自身を除く): 13563507

約数列:

[1, 3, 7, 21, 23, 29, 69, 87, 161, 203, 483, 609, 667, 1499, 2001, 4497, 4669, 10493, 14007, 31479, 34477, 43471, 103431, 130413, 241339, 304297, 724017, 912891, 999833, 2999499, 6998831, 20996493]

約数ペア:

[(1, 20996493), (3, 6998831), (7, 2999499), (21, 999833), (23, 912891), (29, 724017), (69, 304297), (87, 241339), (161, 130413), (203, 103431), (483, 43471), (609, 34477), (667, 31479), (1499, 14007), (2001, 10493), (4497, 4669)]