1921978180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{20117}}^1$

素因数の和:20424

約数の個数: 48

約数和(自身を含む): 4288996656

約数和(自身を除く): 2367018476

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 281, 340, 562, 1124, 1405, 2810, 4777, 5620, 9554, 19108, 20117, 23885, 40234, 47770, 80468, 95540, 100585, 201170, 341989, 402340, 683978, 1367956, 1709945, 3419890, 5652877, 6839780, 11305754, 22611508, 28264385, 56528770, 96098909, 113057540, 192197818, 384395636, 480494545, 960989090, 1921978180]

約数ペア:

[(1, 1921978180), (2, 960989090), (4, 480494545), (5, 384395636), (10, 192197818), (17, 113057540), (20, 96098909), (34, 56528770), (68, 28264385), (85, 22611508), (170, 11305754), (281, 6839780), (340, 5652877), (562, 3419890), (1124, 1709945), (1405, 1367956), (2810, 683978), (4777, 402340), (5620, 341989), (9554, 201170), (19108, 100585), (20117, 95540), (23885, 80468), (40234, 47770)]