128587960

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{13339}}^1$

素因数の和:13591

約数の個数: 32

約数和(自身を含む): 290545200

約数和(自身を除く): 161957240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 482, 964, 1205, 1928, 2410, 4820, 9640, 13339, 26678, 53356, 66695, 106712, 133390, 266780, 533560, 3214699, 6429398, 12858796, 16073495, 25717592, 32146990, 64293980, 128587960]

約数ペア:

[(1, 128587960), (2, 64293980), (4, 32146990), (5, 25717592), (8, 16073495), (10, 12858796), (20, 6429398), (40, 3214699), (241, 533560), (482, 266780), (964, 133390), (1205, 106712), (1928, 66695), (2410, 53356), (4820, 26678), (9640, 13339)]