861240820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1777}}^1\times {\mathrm{2203}}^1$

素因数の和:4000

約数の個数: 48

約数和(自身を含む): 1975030848

約数和(自身を除く): 1113790028

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1777, 2203, 3554, 4406, 7108, 8812, 8885, 11015, 17770, 19547, 22030, 24233, 35540, 39094, 44060, 48466, 78188, 96932, 97735, 121165, 195470, 242330, 390940, 484660, 3914731, 7829462, 15658924, 19573655, 39147310, 43062041, 78294620, 86124082, 172248164, 215310205, 430620410, 861240820]

約数ペア:

[(1, 861240820), (2, 430620410), (4, 215310205), (5, 172248164), (10, 86124082), (11, 78294620), (20, 43062041), (22, 39147310), (44, 19573655), (55, 15658924), (110, 7829462), (220, 3914731), (1777, 484660), (2203, 390940), (3554, 242330), (4406, 195470), (7108, 121165), (8812, 97735), (8885, 96932), (11015, 78188), (17770, 48466), (19547, 44060), (22030, 39094), (24233, 35540)]