19996263

素因数分解:

$3^2\times 7^2\times {\mathrm{45343}}^1$

素因数の和:45363

約数の個数: 18

約数和(自身を含む): 33599904

約数和(自身を除く): 13603641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 45343, 136029, 317401, 408087, 952203, 2221807, 2856609, 6665421, 19996263]

約数ペア:

[(1, 19996263), (3, 6665421), (7, 2856609), (9, 2221807), (21, 952203), (49, 408087), (63, 317401), (147, 136029), (441, 45343)]