18832280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10949}}^1$

素因数の和:11003

約数の個数: 32

約数和(自身を含む): 43362000

約数和(自身を除く): 24529720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 10949, 21898, 43796, 54745, 87592, 109490, 218980, 437960, 470807, 941614, 1883228, 2354035, 3766456, 4708070, 9416140, 18832280]

約数ペア:

[(1, 18832280), (2, 9416140), (4, 4708070), (5, 3766456), (8, 2354035), (10, 1883228), (20, 941614), (40, 470807), (43, 437960), (86, 218980), (172, 109490), (215, 87592), (344, 54745), (430, 43796), (860, 21898), (1720, 10949)]