255640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1$

素因数の和:112

約数の個数: 64

約数和(自身を含む): 725760

約数和(自身を除く): 470120

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 83, 88, 110, 140, 154, 166, 220, 280, 308, 332, 385, 415, 440, 581, 616, 664, 770, 830, 913, 1162, 1540, 1660, 1826, 2324, 2905, 3080, 3320, 3652, 4565, 4648, 5810, 6391, 7304, 9130, 11620, 12782, 18260, 23240, 25564, 31955, 36520, 51128, 63910, 127820, 255640]

約数ペア:

[(1, 255640), (2, 127820), (4, 63910), (5, 51128), (7, 36520), (8, 31955), (10, 25564), (11, 23240), (14, 18260), (20, 12782), (22, 11620), (28, 9130), (35, 7304), (40, 6391), (44, 5810), (55, 4648), (56, 4565), (70, 3652), (77, 3320), (83, 3080), (88, 2905), (110, 2324), (140, 1826), (154, 1660), (166, 1540), (220, 1162), (280, 913), (308, 830), (332, 770), (385, 664), (415, 616), (440, 581)]