28219639

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{2837}}^1$

素因数の和:2887

約数の個数: 16

約数和(自身を含む): 34056000

約数和(自身を除く): 5836361

約数列:

[1, 7, 29, 49, 203, 343, 1421, 2837, 9947, 19859, 82273, 139013, 575911, 973091, 4031377, 28219639]

約数ペア:

[(1, 28219639), (7, 4031377), (29, 973091), (49, 575911), (203, 139013), (343, 82273), (1421, 19859), (2837, 9947)]