28291284

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{857}}^1$

素因数の和:1005

約数の個数: 72

約数和(自身を含む): 82450368

約数和(自身を除く): 54159084

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 131, 252, 262, 393, 524, 786, 857, 917, 1179, 1572, 1714, 1834, 2358, 2571, 2751, 3428, 3668, 4716, 5142, 5502, 5999, 7713, 8253, 10284, 11004, 11998, 15426, 16506, 17997, 23996, 30852, 33012, 35994, 53991, 71988, 107982, 112267, 215964, 224534, 336801, 449068, 673602, 785869, 1010403, 1347204, 1571738, 2020806, 2357607, 3143476, 4041612, 4715214, 7072821, 9430428, 14145642, 28291284]

約数ペア:

[(1, 28291284), (2, 14145642), (3, 9430428), (4, 7072821), (6, 4715214), (7, 4041612), (9, 3143476), (12, 2357607), (14, 2020806), (18, 1571738), (21, 1347204), (28, 1010403), (36, 785869), (42, 673602), (63, 449068), (84, 336801), (126, 224534), (131, 215964), (252, 112267), (262, 107982), (393, 71988), (524, 53991), (786, 35994), (857, 33012), (917, 30852), (1179, 23996), (1572, 17997), (1714, 16506), (1834, 15426), (2358, 11998), (2571, 11004), (2751, 10284), (3428, 8253), (3668, 7713), (4716, 5999), (5142, 5502)]