87984620

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{61961}}^1$

素因数の和:62041

約数の個数: 24

約数和(自身を含む): 187373088

約数和(自身を除く): 99388468

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 61961, 123922, 247844, 309805, 619610, 1239220, 4399231, 8798462, 17596924, 21996155, 43992310, 87984620]

約数ペア:

[(1, 87984620), (2, 43992310), (4, 21996155), (5, 17596924), (10, 8798462), (20, 4399231), (71, 1239220), (142, 619610), (284, 309805), (355, 247844), (710, 123922), (1420, 61961)]