28789995

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{277}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 51280992

約数和(自身を除く): 22490997

約数列:

[1, 3, 5, 13, 15, 39, 41, 65, 123, 169, 195, 205, 277, 507, 533, 615, 831, 845, 1385, 1599, 2535, 2665, 3601, 4155, 6929, 7995, 10803, 11357, 18005, 20787, 34071, 34645, 46813, 54015, 56785, 103935, 140439, 147641, 170355, 234065, 442923, 702195, 738205, 1919333, 2214615, 5757999, 9596665, 28789995]

約数ペア:

[(1, 28789995), (3, 9596665), (5, 5757999), (13, 2214615), (15, 1919333), (39, 738205), (41, 702195), (65, 442923), (123, 234065), (169, 170355), (195, 147641), (205, 140439), (277, 103935), (507, 56785), (533, 54015), (615, 46813), (831, 34645), (845, 34071), (1385, 20787), (1599, 18005), (2535, 11357), (2665, 10803), (3601, 7995), (4155, 6929)]