20666716

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9343}}^1$

素因数の和:9433

約数の個数: 24

約数和(自身を含む): 41861120

約数和(自身を除く): 21194404

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9343, 18686, 37372, 65401, 130802, 261604, 738097, 1476194, 2952388, 5166679, 10333358, 20666716]

約数ペア:

[(1, 20666716), (2, 10333358), (4, 5166679), (7, 2952388), (14, 1476194), (28, 738097), (79, 261604), (158, 130802), (316, 65401), (553, 37372), (1106, 18686), (2212, 9343)]