21056778

素因数分解:

$2^1\times 3^2\times {\mathrm{17}}^1\times {\mathrm{68813}}^1$

素因数の和:68838

約数の個数: 24

約数和(自身を含む): 48307428

約数和(自身を除く): 27250650

約数列:

[1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 306, 68813, 137626, 206439, 412878, 619317, 1169821, 1238634, 2339642, 3509463, 7018926, 10528389, 21056778]

約数ペア:

[(1, 21056778), (2, 10528389), (3, 7018926), (6, 3509463), (9, 2339642), (17, 1238634), (18, 1169821), (34, 619317), (51, 412878), (102, 206439), (153, 137626), (306, 68813)]