28125009

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{337}}^1$

素因数の和:638

約数の個数: 32

約数和(自身を含む): 45751680

約数和(自身を除く): 17626671

約数列:

[1, 3, 9, 11, 27, 33, 99, 281, 297, 337, 843, 1011, 2529, 3033, 3091, 3707, 7587, 9099, 9273, 11121, 27819, 33363, 83457, 94697, 100089, 284091, 852273, 1041667, 2556819, 3125001, 9375003, 28125009]

約数ペア:

[(1, 28125009), (3, 9375003), (9, 3125001), (11, 2556819), (27, 1041667), (33, 852273), (99, 284091), (281, 100089), (297, 94697), (337, 83457), (843, 33363), (1011, 27819), (2529, 11121), (3033, 9273), (3091, 9099), (3707, 7587)]