21900393

素因数分解:

$3^2\times {\mathrm{23}}^1\times {\mathrm{241}}^1\times {\mathrm{439}}^1$

素因数の和:709

約数の個数: 24

約数和(自身を含む): 33221760

約数和(自身を除く): 11321367

約数列:

[1, 3, 9, 23, 69, 207, 241, 439, 723, 1317, 2169, 3951, 5543, 10097, 16629, 30291, 49887, 90873, 105799, 317397, 952191, 2433377, 7300131, 21900393]

約数ペア:

[(1, 21900393), (3, 7300131), (9, 2433377), (23, 952191), (69, 317397), (207, 105799), (241, 90873), (439, 49887), (723, 30291), (1317, 16629), (2169, 10097), (3951, 5543)]