20931885

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11927}}^1$

素因数の和:11954

約数の個数: 32

約数和(自身を含む): 40078080

約数和(自身を除く): 19146195

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11927, 35781, 59635, 107343, 155051, 178905, 322029, 465153, 536715, 775255, 1395459, 1610145, 2325765, 4186377, 6977295, 20931885]

約数ペア:

[(1, 20931885), (3, 6977295), (5, 4186377), (9, 2325765), (13, 1610145), (15, 1395459), (27, 775255), (39, 536715), (45, 465153), (65, 322029), (117, 178905), (135, 155051), (195, 107343), (351, 59635), (585, 35781), (1755, 11927)]