28003563

素因数分解:

$3^5\times 7^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 48711936

約数和(自身を除く): 20708373

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 101, 163, 189, 243, 303, 489, 567, 707, 909, 1141, 1467, 1701, 2121, 2727, 3423, 4401, 6363, 8181, 10269, 13203, 16463, 19089, 24543, 30807, 39609, 49389, 57267, 92421, 115241, 148167, 171801, 277263, 345723, 444501, 1037169, 1333503, 3111507, 4000509, 9334521, 28003563]

約数ペア:

[(1, 28003563), (3, 9334521), (7, 4000509), (9, 3111507), (21, 1333503), (27, 1037169), (63, 444501), (81, 345723), (101, 277263), (163, 171801), (189, 148167), (243, 115241), (303, 92421), (489, 57267), (567, 49389), (707, 39609), (909, 30807), (1141, 24543), (1467, 19089), (1701, 16463), (2121, 13203), (2727, 10269), (3423, 8181), (4401, 6363)]