19990197

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{269}}^1\times {\mathrm{359}}^1$

素因数の和:657

約数の個数: 24

約数和(自身を含む): 30326400

約数和(自身を除く): 10336203

約数列:

[1, 3, 9, 23, 69, 207, 269, 359, 807, 1077, 2421, 3231, 6187, 8257, 18561, 24771, 55683, 74313, 96571, 289713, 869139, 2221133, 6663399, 19990197]

約数ペア:

[(1, 19990197), (3, 6663399), (9, 2221133), (23, 869139), (69, 289713), (207, 96571), (269, 74313), (359, 55683), (807, 24771), (1077, 18561), (2421, 8257), (3231, 6187)]