18679381

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{641}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 22434048

約数和(自身を除く): 3754667

約数列:

[1, 7, 23, 161, 181, 641, 1267, 4163, 4487, 14743, 29141, 103201, 116021, 812147, 2668483, 18679381]

約数ペア:

[(1, 18679381), (7, 2668483), (23, 812147), (161, 116021), (181, 103201), (641, 29141), (1267, 14743), (4163, 4487)]