128696680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{459631}}^1$

素因数の和:459649

約数の個数: 32

約数和(自身を含む): 330935040

約数和(自身を除く): 202238360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 459631, 919262, 1838524, 2298155, 3217417, 3677048, 4596310, 6434834, 9192620, 12869668, 16087085, 18385240, 25739336, 32174170, 64348340, 128696680]

約数ペア:

[(1, 128696680), (2, 64348340), (4, 32174170), (5, 25739336), (7, 18385240), (8, 16087085), (10, 12869668), (14, 9192620), (20, 6434834), (28, 4596310), (35, 3677048), (40, 3217417), (56, 2298155), (70, 1838524), (140, 919262), (280, 459631)]