28863919

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{2939}}^1$

素因数の和:3030

約数の個数: 16

約数和(自身を含む): 34997760

約数和(自身を除く): 6133841

約数列:

[1, 7, 23, 61, 161, 427, 1403, 2939, 9821, 20573, 67597, 179279, 473179, 1254953, 4123417, 28863919]

約数ペア:

[(1, 28863919), (7, 4123417), (23, 1254953), (61, 473179), (161, 179279), (427, 67597), (1403, 20573), (2939, 9821)]