81280480

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{26737}}^1$

素因数の和:26771

約数の個数: 48

約数和(自身を含む): 202139280

約数和(自身を除く): 120858800

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 26737, 53474, 106948, 133685, 213896, 267370, 427792, 508003, 534740, 855584, 1016006, 1069480, 2032012, 2138960, 2540015, 4064024, 4277920, 5080030, 8128048, 10160060, 16256096, 20320120, 40640240, 81280480]

約数ペア:

[(1, 81280480), (2, 40640240), (4, 20320120), (5, 16256096), (8, 10160060), (10, 8128048), (16, 5080030), (19, 4277920), (20, 4064024), (32, 2540015), (38, 2138960), (40, 2032012), (76, 1069480), (80, 1016006), (95, 855584), (152, 534740), (160, 508003), (190, 427792), (304, 267370), (380, 213896), (608, 133685), (760, 106948), (1520, 53474), (3040, 26737)]