158720212

素因数分解:

$2^2\times 7^2\times {\mathrm{809797}}^1$

素因数の和:809815

約数の個数: 18

約数和(自身を含む): 323109402

約数和(自身を除く): 164389190

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 809797, 1619594, 3239188, 5668579, 11337158, 22674316, 39680053, 79360106, 158720212]

約数ペア:

[(1, 158720212), (2, 79360106), (4, 39680053), (7, 22674316), (14, 11337158), (28, 5668579), (49, 3239188), (98, 1619594), (196, 809797)]