20690992

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4993}}^1$

素因数の和:5045

約数の個数: 40

約数和(自身を含む): 47063456

約数和(自身を除く): 26372464

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 259, 296, 518, 592, 1036, 2072, 4144, 4993, 9986, 19972, 34951, 39944, 69902, 79888, 139804, 184741, 279608, 369482, 559216, 738964, 1293187, 1477928, 2586374, 2955856, 5172748, 10345496, 20690992]

約数ペア:

[(1, 20690992), (2, 10345496), (4, 5172748), (7, 2955856), (8, 2586374), (14, 1477928), (16, 1293187), (28, 738964), (37, 559216), (56, 369482), (74, 279608), (112, 184741), (148, 139804), (259, 79888), (296, 69902), (518, 39944), (592, 34951), (1036, 19972), (2072, 9986), (4144, 4993)]