18887216

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{62129}}^1$

素因数の和:62156

約数の個数: 20

約数和(自身を含む): 38520600

約数和(自身を除く): 19633384

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 62129, 124258, 248516, 497032, 994064, 1180451, 2360902, 4721804, 9443608, 18887216]

約数ペア:

[(1, 18887216), (2, 9443608), (4, 4721804), (8, 2360902), (16, 1180451), (19, 994064), (38, 497032), (76, 248516), (152, 124258), (304, 62129)]