19663161

素因数分解:

$3^1\times 7^3\times {\mathrm{97}}^1\times {\mathrm{197}}^1$

素因数の和:318

約数の個数: 32

約数和(自身を含む): 31046400

約数和(自身を除く): 11383239

約数列:

[1, 3, 7, 21, 49, 97, 147, 197, 291, 343, 591, 679, 1029, 1379, 2037, 4137, 4753, 9653, 14259, 19109, 28959, 33271, 57327, 67571, 99813, 133763, 202713, 401289, 936341, 2809023, 6554387, 19663161]

約数ペア:

[(1, 19663161), (3, 6554387), (7, 2809023), (21, 936341), (49, 401289), (97, 202713), (147, 133763), (197, 99813), (291, 67571), (343, 57327), (591, 33271), (679, 28959), (1029, 19109), (1379, 14259), (2037, 9653), (4137, 4753)]