128400440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{458573}}^1$

素因数の和:458591

約数の個数: 32

約数和(自身を含む): 330173280

約数和(自身を除く): 201772840

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 458573, 917146, 1834292, 2292865, 3210011, 3668584, 4585730, 6420022, 9171460, 12840044, 16050055, 18342920, 25680088, 32100110, 64200220, 128400440]

約数ペア:

[(1, 128400440), (2, 64200220), (4, 32100110), (5, 25680088), (7, 18342920), (8, 16050055), (10, 12840044), (14, 9171460), (20, 6420022), (28, 4585730), (35, 3668584), (40, 3210011), (56, 2292865), (70, 1834292), (140, 917146), (280, 458573)]