28142140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6367}}^1$

素因数の和:6406

約数の個数: 48

約数和(自身を含む): 67398912

約数和(自身を除く): 39256772

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 6367, 12734, 25468, 31835, 63670, 82771, 108239, 127340, 165542, 216478, 331084, 413855, 432956, 541195, 827710, 1082390, 1407107, 1655420, 2164780, 2814214, 5628428, 7035535, 14071070, 28142140]

約数ペア:

[(1, 28142140), (2, 14071070), (4, 7035535), (5, 5628428), (10, 2814214), (13, 2164780), (17, 1655420), (20, 1407107), (26, 1082390), (34, 827710), (52, 541195), (65, 432956), (68, 413855), (85, 331084), (130, 216478), (170, 165542), (221, 127340), (260, 108239), (340, 82771), (442, 63670), (884, 31835), (1105, 25468), (2210, 12734), (4420, 6367)]