28340715

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:204

約数の個数: 64

約数和(自身を含む): 52254720

約数和(自身を除く): 23914005

約数列:

[1, 3, 5, 13, 15, 23, 39, 65, 69, 71, 89, 115, 195, 213, 267, 299, 345, 355, 445, 897, 923, 1065, 1157, 1335, 1495, 1633, 2047, 2769, 3471, 4485, 4615, 4899, 5785, 6141, 6319, 8165, 10235, 13845, 17355, 18957, 21229, 24495, 26611, 30705, 31595, 63687, 79833, 82147, 94785, 106145, 133055, 145337, 246441, 318435, 399165, 410735, 436011, 726685, 1232205, 1889381, 2180055, 5668143, 9446905, 28340715]

約数ペア:

[(1, 28340715), (3, 9446905), (5, 5668143), (13, 2180055), (15, 1889381), (23, 1232205), (39, 726685), (65, 436011), (69, 410735), (71, 399165), (89, 318435), (115, 246441), (195, 145337), (213, 133055), (267, 106145), (299, 94785), (345, 82147), (355, 79833), (445, 63687), (897, 31595), (923, 30705), (1065, 26611), (1157, 24495), (1335, 21229), (1495, 18957), (1633, 17355), (2047, 13845), (2769, 10235), (3471, 8165), (4485, 6319), (4615, 6141), (4899, 5785)]