21007708

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{887}}^1$

素因数の和:1113

約数の個数: 24

約数和(自身を含む): 38191104

約数和(自身を除く): 17183396

約数列:

[1, 2, 4, 31, 62, 124, 191, 382, 764, 887, 1774, 3548, 5921, 11842, 23684, 27497, 54994, 109988, 169417, 338834, 677668, 5251927, 10503854, 21007708]

約数ペア:

[(1, 21007708), (2, 10503854), (4, 5251927), (31, 677668), (62, 338834), (124, 169417), (191, 109988), (382, 54994), (764, 27497), (887, 23684), (1774, 11842), (3548, 5921)]