21309944

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{140197}}^1$

素因数の和:140222

約数の個数: 16

約数和(自身を含む): 42059400

約数和(自身を除く): 20749456

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 140197, 280394, 560788, 1121576, 2663743, 5327486, 10654972, 21309944]

約数ペア:

[(1, 21309944), (2, 10654972), (4, 5327486), (8, 2663743), (19, 1121576), (38, 560788), (76, 280394), (152, 140197)]