9780320

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5557}}^1$

素因数の和:5583

約数の個数: 48

約数和(自身を含む): 25211088

約数和(自身を除く): 15430768

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 5557, 11114, 22228, 27785, 44456, 55570, 61127, 88912, 111140, 122254, 177824, 222280, 244508, 305635, 444560, 489016, 611270, 889120, 978032, 1222540, 1956064, 2445080, 4890160, 9780320]

約数ペア:

[(1, 9780320), (2, 4890160), (4, 2445080), (5, 1956064), (8, 1222540), (10, 978032), (11, 889120), (16, 611270), (20, 489016), (22, 444560), (32, 305635), (40, 244508), (44, 222280), (55, 177824), (80, 122254), (88, 111140), (110, 88912), (160, 61127), (176, 55570), (220, 44456), (352, 27785), (440, 22228), (880, 11114), (1760, 5557)]