1280236420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{859}}^1\times {\mathrm{1733}}^1$

素因数の和:2644

約数の個数: 48

約数和(自身を含む): 2755811520

約数和(自身を除く): 1475575100

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 859, 860, 1718, 1733, 3436, 3466, 4295, 6932, 8590, 8665, 17180, 17330, 34660, 36937, 73874, 74519, 147748, 149038, 184685, 298076, 369370, 372595, 738740, 745190, 1488647, 1490380, 2977294, 5954588, 7443235, 14886470, 29772940, 64011821, 128023642, 256047284, 320059105, 640118210, 1280236420]

約数ペア:

[(1, 1280236420), (2, 640118210), (4, 320059105), (5, 256047284), (10, 128023642), (20, 64011821), (43, 29772940), (86, 14886470), (172, 7443235), (215, 5954588), (430, 2977294), (859, 1490380), (860, 1488647), (1718, 745190), (1733, 738740), (3436, 372595), (3466, 369370), (4295, 298076), (6932, 184685), (8590, 149038), (8665, 147748), (17180, 74519), (17330, 73874), (34660, 36937)]