388660760

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{133103}}^1$

素因数の和:133187

約数の個数: 32

約数和(自身を含む): 886472640

約数和(自身を除く): 497811880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 133103, 266206, 532412, 665515, 1064824, 1331030, 2662060, 5324120, 9716519, 19433038, 38866076, 48582595, 77732152, 97165190, 194330380, 388660760]

約数ペア:

[(1, 388660760), (2, 194330380), (4, 97165190), (5, 77732152), (8, 48582595), (10, 38866076), (20, 19433038), (40, 9716519), (73, 5324120), (146, 2662060), (292, 1331030), (365, 1064824), (584, 665515), (730, 532412), (1460, 266206), (2920, 133103)]