20406969

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{571}}^1$

素因数の和:626

約数の個数: 36

約数和(自身を含む): 33997392

約数和(自身を除く): 13590423

約数列:

[1, 3, 9, 11, 19, 33, 57, 99, 171, 209, 361, 571, 627, 1083, 1713, 1881, 3249, 3971, 5139, 6281, 10849, 11913, 18843, 32547, 35739, 56529, 97641, 119339, 206131, 358017, 618393, 1074051, 1855179, 2267441, 6802323, 20406969]

約数ペア:

[(1, 20406969), (3, 6802323), (9, 2267441), (11, 1855179), (19, 1074051), (33, 618393), (57, 358017), (99, 206131), (171, 119339), (209, 97641), (361, 56529), (571, 35739), (627, 32547), (1083, 18843), (1713, 11913), (1881, 10849), (3249, 6281), (3971, 5139)]