77939540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{7841}}^1$

素因数の和:7928

約数の個数: 48

約数和(自身を含む): 189713664

約数和(自身を除く): 111774124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 7841, 9940, 15682, 31364, 39205, 54887, 78410, 109774, 156820, 219548, 274435, 548870, 556711, 1097740, 1113422, 2226844, 2783555, 3896977, 5567110, 7793954, 11134220, 15587908, 19484885, 38969770, 77939540]

約数ペア:

[(1, 77939540), (2, 38969770), (4, 19484885), (5, 15587908), (7, 11134220), (10, 7793954), (14, 5567110), (20, 3896977), (28, 2783555), (35, 2226844), (70, 1113422), (71, 1097740), (140, 556711), (142, 548870), (284, 274435), (355, 219548), (497, 156820), (710, 109774), (994, 78410), (1420, 54887), (1988, 39205), (2485, 31364), (4970, 15682), (7841, 9940)]