21026551

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{1009}}^1$

素因数の和:1258

約数の個数: 16

約数和(自身を含む): 26017600

約数和(自身を除く): 4991049

約数列:

[1, 7, 13, 91, 229, 1009, 1603, 2977, 7063, 13117, 20839, 91819, 231061, 1617427, 3003793, 21026551]

約数ペア:

[(1, 21026551), (7, 3003793), (13, 1617427), (91, 231061), (229, 91819), (1009, 20839), (1603, 13117), (2977, 7063)]