20990403

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11489}}^1$

素因数の和:11531

約数の個数: 24

約数和(自身を含む): 35848800

約数和(自身を除く): 14858397

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11489, 34467, 80423, 103401, 241269, 333181, 723807, 999543, 2332267, 2998629, 6996801, 20990403]

約数ペア:

[(1, 20990403), (3, 6996801), (7, 2998629), (9, 2332267), (21, 999543), (29, 723807), (63, 333181), (87, 241269), (203, 103401), (261, 80423), (609, 34467), (1827, 11489)]