129616400

素因数分解:

$2^4\times 5^2\times {\mathrm{251}}^1\times {\mathrm{1291}}^1$

素因数の和:1560

約数の個数: 60

約数和(自身を含む): 312886224

約数和(自身を除く): 183269824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 251, 400, 502, 1004, 1255, 1291, 2008, 2510, 2582, 4016, 5020, 5164, 6275, 6455, 10040, 10328, 12550, 12910, 20080, 20656, 25100, 25820, 32275, 50200, 51640, 64550, 100400, 103280, 129100, 258200, 324041, 516400, 648082, 1296164, 1620205, 2592328, 3240410, 5184656, 6480820, 8101025, 12961640, 16202050, 25923280, 32404100, 64808200, 129616400]

約数ペア:

[(1, 129616400), (2, 64808200), (4, 32404100), (5, 25923280), (8, 16202050), (10, 12961640), (16, 8101025), (20, 6480820), (25, 5184656), (40, 3240410), (50, 2592328), (80, 1620205), (100, 1296164), (200, 648082), (251, 516400), (400, 324041), (502, 258200), (1004, 129100), (1255, 103280), (1291, 100400), (2008, 64550), (2510, 51640), (2582, 50200), (4016, 32275), (5020, 25820), (5164, 25100), (6275, 20656), (6455, 20080), (10040, 12910), (10328, 12550)]