20653551

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{449}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 31590000

約数和(自身を除く): 10936449

約数列:

[1, 3, 9, 19, 57, 171, 269, 449, 807, 1347, 2421, 4041, 5111, 8531, 15333, 25593, 45999, 76779, 120781, 362343, 1087029, 2294839, 6884517, 20653551]

約数ペア:

[(1, 20653551), (3, 6884517), (9, 2294839), (19, 1087029), (57, 362343), (171, 120781), (269, 76779), (449, 45999), (807, 25593), (1347, 15333), (2421, 8531), (4041, 5111)]