287551257

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{709}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 466214400

約数和(自身を除く): 178663143

約数列:

[1, 3, 7, 21, 31, 49, 89, 93, 147, 217, 267, 623, 651, 709, 1519, 1869, 2127, 2759, 4361, 4557, 4963, 8277, 13083, 14889, 19313, 21979, 34741, 57939, 63101, 65937, 104223, 135191, 153853, 189303, 405573, 441707, 461559, 1076971, 1325121, 1956131, 3091949, 3230913, 5868393, 9275847, 13692917, 41078751, 95850419, 287551257]

約数ペア:

[(1, 287551257), (3, 95850419), (7, 41078751), (21, 13692917), (31, 9275847), (49, 5868393), (89, 3230913), (93, 3091949), (147, 1956131), (217, 1325121), (267, 1076971), (623, 461559), (651, 441707), (709, 405573), (1519, 189303), (1869, 153853), (2127, 135191), (2759, 104223), (4361, 65937), (4557, 63101), (4963, 57939), (8277, 34741), (13083, 21979), (14889, 19313)]