28787205

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1429}}^1$

素因数の和:1533

約数の個数: 32

約数和(自身を含む): 49420800

約数和(自身を除く): 20633595

約数列:

[1, 3, 5, 15, 17, 51, 79, 85, 237, 255, 395, 1185, 1343, 1429, 4029, 4287, 6715, 7145, 20145, 21435, 24293, 72879, 112891, 121465, 338673, 364395, 564455, 1693365, 1919147, 5757441, 9595735, 28787205]

約数ペア:

[(1, 28787205), (3, 9595735), (5, 5757441), (15, 1919147), (17, 1693365), (51, 564455), (79, 364395), (85, 338673), (237, 121465), (255, 112891), (395, 72879), (1185, 24293), (1343, 21435), (1429, 20145), (4029, 7145), (4287, 6715)]