20392988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{907}}^1$

素因数の和:1002

約数の個数: 48

約数和(自身を含む): 45153024

約数和(自身を除く): 24760036

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 73, 77, 146, 154, 292, 308, 511, 803, 907, 1022, 1606, 1814, 2044, 3212, 3628, 5621, 6349, 9977, 11242, 12698, 19954, 22484, 25396, 39908, 66211, 69839, 132422, 139678, 264844, 279356, 463477, 728321, 926954, 1456642, 1853908, 2913284, 5098247, 10196494, 20392988]

約数ペア:

[(1, 20392988), (2, 10196494), (4, 5098247), (7, 2913284), (11, 1853908), (14, 1456642), (22, 926954), (28, 728321), (44, 463477), (73, 279356), (77, 264844), (146, 139678), (154, 132422), (292, 69839), (308, 66211), (511, 39908), (803, 25396), (907, 22484), (1022, 19954), (1606, 12698), (1814, 11242), (2044, 9977), (3212, 6349), (3628, 5621)]