21250323

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{691}}^1$

素因数の和:784

約数の個数: 32

約数和(自身を含む): 33880320

約数和(自身を除く): 12629997

約数列:

[1, 3, 9, 17, 27, 51, 67, 153, 201, 459, 603, 691, 1139, 1809, 2073, 3417, 6219, 10251, 11747, 18657, 30753, 35241, 46297, 105723, 138891, 317169, 416673, 787049, 1250019, 2361147, 7083441, 21250323]

約数ペア:

[(1, 21250323), (3, 7083441), (9, 2361147), (17, 1250019), (27, 787049), (51, 416673), (67, 317169), (153, 138891), (201, 105723), (459, 46297), (603, 35241), (691, 30753), (1139, 18657), (1809, 11747), (2073, 10251), (3417, 6219)]