128642444

素因数分解:

$2^2\times 7^2\times {\mathrm{421}}^1\times {\mathrm{1559}}^1$

素因数の和:1998

約数の個数: 36

約数和(自身を含む): 262669680

約数和(自身を除く): 134027236

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 421, 842, 1559, 1684, 2947, 3118, 5894, 6236, 10913, 11788, 20629, 21826, 41258, 43652, 76391, 82516, 152782, 305564, 656339, 1312678, 2625356, 4594373, 9188746, 18377492, 32160611, 64321222, 128642444]

約数ペア:

[(1, 128642444), (2, 64321222), (4, 32160611), (7, 18377492), (14, 9188746), (28, 4594373), (49, 2625356), (98, 1312678), (196, 656339), (421, 305564), (842, 152782), (1559, 82516), (1684, 76391), (2947, 43652), (3118, 41258), (5894, 21826), (6236, 20629), (10913, 11788)]