28495971

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 49164544

約数和(自身を除く): 20668573

約数列:

[1, 3, 7, 9, 21, 43, 63, 67, 129, 157, 201, 301, 387, 469, 471, 603, 903, 1099, 1407, 1413, 2709, 2881, 3297, 4221, 6751, 8643, 9891, 10519, 20167, 20253, 25929, 31557, 47257, 60501, 60759, 73633, 94671, 141771, 181503, 220899, 425313, 452317, 662697, 1356951, 3166219, 4070853, 9498657, 28495971]

約数ペア:

[(1, 28495971), (3, 9498657), (7, 4070853), (9, 3166219), (21, 1356951), (43, 662697), (63, 452317), (67, 425313), (129, 220899), (157, 181503), (201, 141771), (301, 94671), (387, 73633), (469, 60759), (471, 60501), (603, 47257), (903, 31557), (1099, 25929), (1407, 20253), (1413, 20167), (2709, 10519), (2881, 9891), (3297, 8643), (4221, 6751)]