21939165

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{15727}}^1$

素因数の和:15769

約数の個数: 24

約数和(自身を含む): 39257088

約数和(自身を除く): 17317923

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 15727, 47181, 78635, 141543, 235905, 487537, 707715, 1462611, 2437685, 4387833, 7313055, 21939165]

約数ペア:

[(1, 21939165), (3, 7313055), (5, 4387833), (9, 2437685), (15, 1462611), (31, 707715), (45, 487537), (93, 235905), (155, 141543), (279, 78635), (465, 47181), (1395, 15727)]