128325897

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:291

約数の個数: 64

約数和(自身を含む): 225054720

約数和(自身を除く): 96728823

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 73, 131, 189, 213, 219, 393, 497, 511, 639, 657, 917, 1179, 1491, 1533, 1917, 1971, 2751, 3537, 4473, 4599, 5183, 8253, 9301, 9563, 13419, 13797, 15549, 24759, 27903, 28689, 36281, 46647, 65107, 66941, 83709, 86067, 108843, 139941, 195321, 200823, 251127, 258201, 326529, 585963, 602469, 678973, 979587, 1757889, 1807407, 2036919, 4752811, 6110757, 14258433, 18332271, 42775299, 128325897]

約数ペア:

[(1, 128325897), (3, 42775299), (7, 18332271), (9, 14258433), (21, 6110757), (27, 4752811), (63, 2036919), (71, 1807407), (73, 1757889), (131, 979587), (189, 678973), (213, 602469), (219, 585963), (393, 326529), (497, 258201), (511, 251127), (639, 200823), (657, 195321), (917, 139941), (1179, 108843), (1491, 86067), (1533, 83709), (1917, 66941), (1971, 65107), (2751, 46647), (3537, 36281), (4473, 28689), (4599, 27903), (5183, 24759), (8253, 15549), (9301, 13797), (9563, 13419)]