21659261

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{677}}^1$

素因数の和:820

約数の個数: 16

約数和(自身を含む): 24603264

約数和(自身を除く): 2944003

約数列:

[1, 13, 23, 107, 299, 677, 1391, 2461, 8801, 15571, 31993, 72439, 202423, 941707, 1666097, 21659261]

約数ペア:

[(1, 21659261), (13, 1666097), (23, 941707), (107, 202423), (299, 72439), (677, 31993), (1391, 15571), (2461, 8801)]