19801048

素因数分解:

$2^3\times {\mathrm{71}}^2\times {\mathrm{491}}^1$

素因数の和:639

約数の個数: 24

約数和(自身を含む): 37733940

約数和(自身を除く): 17932892

約数列:

[1, 2, 4, 8, 71, 142, 284, 491, 568, 982, 1964, 3928, 5041, 10082, 20164, 34861, 40328, 69722, 139444, 278888, 2475131, 4950262, 9900524, 19801048]

約数ペア:

[(1, 19801048), (2, 9900524), (4, 4950262), (8, 2475131), (71, 278888), (142, 139444), (284, 69722), (491, 40328), (568, 34861), (982, 20164), (1964, 10082), (3928, 5041)]