678366320

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{206819}}^1$

素因数の和:206873

約数の個数: 40

約数和(自身を含む): 1615677840

約数和(自身を除く): 937311520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 206819, 413638, 827276, 1034095, 1654552, 2068190, 3309104, 4136380, 8272760, 8479579, 16545520, 16959158, 33918316, 42397895, 67836632, 84795790, 135673264, 169591580, 339183160, 678366320]

約数ペア:

[(1, 678366320), (2, 339183160), (4, 169591580), (5, 135673264), (8, 84795790), (10, 67836632), (16, 42397895), (20, 33918316), (40, 16959158), (41, 16545520), (80, 8479579), (82, 8272760), (164, 4136380), (205, 3309104), (328, 2068190), (410, 1654552), (656, 1034095), (820, 827276), (1640, 413638), (3280, 206819)]