28509278

素因数分解:

$2^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{691}}^1$

素因数の和:1128

約数の個数: 24

約数和(自身を含む): 49936104

約数和(自身を除く): 21426826

約数列:

[1, 2, 7, 14, 49, 98, 421, 691, 842, 1382, 2947, 4837, 5894, 9674, 20629, 33859, 41258, 67718, 290911, 581822, 2036377, 4072754, 14254639, 28509278]

約数ペア:

[(1, 28509278), (2, 14254639), (7, 4072754), (14, 2036377), (49, 581822), (98, 290911), (421, 67718), (691, 41258), (842, 33859), (1382, 20629), (2947, 9674), (4837, 5894)]