21058905

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{1531}}^1$

素因数の和:1677

約数の個数: 32

約数和(自身を含む): 38827008

約数和(自身を除く): 17768103

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 131, 393, 655, 917, 1531, 1965, 2751, 4585, 4593, 7655, 10717, 13755, 22965, 32151, 53585, 160755, 200561, 601683, 1002805, 1403927, 3008415, 4211781, 7019635, 21058905]

約数ペア:

[(1, 21058905), (3, 7019635), (5, 4211781), (7, 3008415), (15, 1403927), (21, 1002805), (35, 601683), (105, 200561), (131, 160755), (393, 53585), (655, 32151), (917, 22965), (1531, 13755), (1965, 10717), (2751, 7655), (4585, 4593)]