28687141

素因数分解:

$7^1\times {\mathrm{23}}^2\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:241

約数の個数: 24

約数和(自身を含む): 35108864

約数和(自身を除く): 6421723

約数列:

[1, 7, 23, 61, 127, 161, 427, 529, 889, 1403, 2921, 3703, 7747, 9821, 20447, 32269, 54229, 67183, 178181, 225883, 470281, 1247267, 4098163, 28687141]

約数ペア:

[(1, 28687141), (7, 4098163), (23, 1247267), (61, 470281), (127, 225883), (161, 178181), (427, 67183), (529, 54229), (889, 32269), (1403, 20447), (2921, 9821), (3703, 7747)]