28684579

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 37711872

約数和(自身を除く): 9027293

約数列:

[1, 7, 11, 31, 61, 77, 197, 217, 341, 427, 671, 1379, 1891, 2167, 2387, 4697, 6107, 12017, 13237, 15169, 20801, 42749, 67177, 84119, 132187, 145607, 372527, 470239, 925309, 2607689, 4097797, 28684579]

約数ペア:

[(1, 28684579), (7, 4097797), (11, 2607689), (31, 925309), (61, 470239), (77, 372527), (197, 145607), (217, 132187), (341, 84119), (427, 67177), (671, 42749), (1379, 20801), (1891, 15169), (2167, 13237), (2387, 12017), (4697, 6107)]