21499398

素因数分解:

$2^1\times 3^3\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 50181120

約数和(自身を除く): 28681722

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 47, 54, 86, 94, 129, 141, 197, 258, 282, 387, 394, 423, 591, 774, 846, 1161, 1182, 1269, 1773, 2021, 2322, 2538, 3546, 4042, 5319, 6063, 8471, 9259, 10638, 12126, 16942, 18189, 18518, 25413, 27777, 36378, 50826, 54567, 55554, 76239, 83331, 109134, 152478, 166662, 228717, 249993, 398137, 457434, 499986, 796274, 1194411, 2388822, 3583233, 7166466, 10749699, 21499398]

約数ペア:

[(1, 21499398), (2, 10749699), (3, 7166466), (6, 3583233), (9, 2388822), (18, 1194411), (27, 796274), (43, 499986), (47, 457434), (54, 398137), (86, 249993), (94, 228717), (129, 166662), (141, 152478), (197, 109134), (258, 83331), (282, 76239), (387, 55554), (394, 54567), (423, 50826), (591, 36378), (774, 27777), (846, 25413), (1161, 18518), (1182, 18189), (1269, 16942), (1773, 12126), (2021, 10638), (2322, 9259), (2538, 8471), (3546, 6063), (4042, 5319)]