21447804

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{821}}^1$

素因数の和:1146

約数の個数: 48

約数和(自身を含む): 57447936

約数和(自身を除く): 36000132

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 311, 622, 821, 933, 1244, 1642, 1866, 2177, 2463, 3284, 3732, 4354, 4926, 5747, 6531, 8708, 9852, 11494, 13062, 17241, 22988, 26124, 34482, 68964, 255331, 510662, 765993, 1021324, 1531986, 1787317, 3063972, 3574634, 5361951, 7149268, 10723902, 21447804]

約数ペア:

[(1, 21447804), (2, 10723902), (3, 7149268), (4, 5361951), (6, 3574634), (7, 3063972), (12, 1787317), (14, 1531986), (21, 1021324), (28, 765993), (42, 510662), (84, 255331), (311, 68964), (622, 34482), (821, 26124), (933, 22988), (1244, 17241), (1642, 13062), (1866, 11494), (2177, 9852), (2463, 8708), (3284, 6531), (3732, 5747), (4354, 4926)]