28705371

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 42094080

約数和(自身を除く): 13388709

約数列:

[1, 3, 19, 41, 57, 71, 123, 173, 213, 519, 779, 1349, 2337, 2911, 3287, 4047, 7093, 8733, 9861, 12283, 21279, 36849, 55309, 134767, 165927, 233377, 404301, 503603, 700131, 1510809, 9568457, 28705371]

約数ペア:

[(1, 28705371), (3, 9568457), (19, 1510809), (41, 700131), (57, 503603), (71, 404301), (123, 233377), (173, 165927), (213, 134767), (519, 55309), (779, 36849), (1349, 21279), (2337, 12283), (2911, 9861), (3287, 8733), (4047, 7093)]