681074660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{991}}^1\times {\mathrm{4909}}^1$

素因数の和:5916

約数の個数: 48

約数和(自身を含む): 1636561920

約数和(自身を除く): 955487260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 991, 1982, 3964, 4909, 4955, 6937, 9818, 9910, 13874, 19636, 19820, 24545, 27748, 34363, 34685, 49090, 68726, 69370, 98180, 137452, 138740, 171815, 343630, 687260, 4864819, 9729638, 19459276, 24324095, 34053733, 48648190, 68107466, 97296380, 136214932, 170268665, 340537330, 681074660]

約数ペア:

[(1, 681074660), (2, 340537330), (4, 170268665), (5, 136214932), (7, 97296380), (10, 68107466), (14, 48648190), (20, 34053733), (28, 24324095), (35, 19459276), (70, 9729638), (140, 4864819), (991, 687260), (1982, 343630), (3964, 171815), (4909, 138740), (4955, 137452), (6937, 98180), (9818, 69370), (9910, 68726), (13874, 49090), (19636, 34685), (19820, 34363), (24545, 27748)]