21005279

素因数分解:

${\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{677}}^1$

素因数の和:790

約数の個数: 16

約数和(自身を含む): 23431680

約数和(自身を除く): 2426401

約数列:

[1, 19, 23, 71, 437, 677, 1349, 1633, 12863, 15571, 31027, 48067, 295849, 913273, 1105541, 21005279]

約数ペア:

[(1, 21005279), (19, 1105541), (23, 913273), (71, 295849), (437, 48067), (677, 31027), (1349, 15571), (1633, 12863)]