8518280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:278

約数の個数: 64

約数和(自身を含む): 20528640

約数和(自身を除く): 12010360

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 47, 92, 94, 115, 184, 188, 197, 230, 235, 376, 394, 460, 470, 788, 920, 940, 985, 1081, 1576, 1880, 1970, 2162, 3940, 4324, 4531, 5405, 7880, 8648, 9062, 9259, 10810, 18124, 18518, 21620, 22655, 36248, 37036, 43240, 45310, 46295, 74072, 90620, 92590, 181240, 185180, 212957, 370360, 425914, 851828, 1064785, 1703656, 2129570, 4259140, 8518280]

約数ペア:

[(1, 8518280), (2, 4259140), (4, 2129570), (5, 1703656), (8, 1064785), (10, 851828), (20, 425914), (23, 370360), (40, 212957), (46, 185180), (47, 181240), (92, 92590), (94, 90620), (115, 74072), (184, 46295), (188, 45310), (197, 43240), (230, 37036), (235, 36248), (376, 22655), (394, 21620), (460, 18518), (470, 18124), (788, 10810), (920, 9259), (940, 9062), (985, 8648), (1081, 7880), (1576, 5405), (1880, 4531), (1970, 4324), (2162, 3940)]