19818160

素因数分解:

$2^4\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1297}}^1$

素因数の和:1501

約数の個数: 40

約数和(自身を含む): 46354176

約数和(自身を除く): 26536016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 191, 382, 764, 955, 1297, 1528, 1910, 2594, 3056, 3820, 5188, 6485, 7640, 10376, 12970, 15280, 20752, 25940, 51880, 103760, 247727, 495454, 990908, 1238635, 1981816, 2477270, 3963632, 4954540, 9909080, 19818160]

約数ペア:

[(1, 19818160), (2, 9909080), (4, 4954540), (5, 3963632), (8, 2477270), (10, 1981816), (16, 1238635), (20, 990908), (40, 495454), (80, 247727), (191, 103760), (382, 51880), (764, 25940), (955, 20752), (1297, 15280), (1528, 12970), (1910, 10376), (2594, 7640), (3056, 6485), (3820, 5188)]