21288406

素因数分解:

$2^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1\times {\mathrm{1049}}^1$

素因数の和:1263

約数の個数: 16

約数和(自身を含む): 32634000

約数和(自身を除く): 11345594

約数列:

[1, 2, 73, 139, 146, 278, 1049, 2098, 10147, 20294, 76577, 145811, 153154, 291622, 10644203, 21288406]

約数ペア:

[(1, 21288406), (2, 10644203), (73, 291622), (139, 153154), (146, 145811), (278, 76577), (1049, 20294), (2098, 10147)]