21377258

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{337}}^1$

素因数の和:566

約数の個数: 32

約数和(自身を含む): 38548224

約数和(自身を除く): 17170966

約数列:

[1, 2, 7, 14, 23, 46, 161, 197, 322, 337, 394, 674, 1379, 2359, 2758, 4531, 4718, 7751, 9062, 15502, 31717, 54257, 63434, 66389, 108514, 132778, 464723, 929446, 1526947, 3053894, 10688629, 21377258]

約数ペア:

[(1, 21377258), (2, 10688629), (7, 3053894), (14, 1526947), (23, 929446), (46, 464723), (161, 132778), (197, 108514), (322, 66389), (337, 63434), (394, 54257), (674, 31717), (1379, 15502), (2359, 9062), (2758, 7751), (4531, 4718)]