178760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1$

素因数の和:161

約数の個数: 32

約数和(自身を含む): 415800

約数和(自身を除く): 237040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 109, 164, 205, 218, 328, 410, 436, 545, 820, 872, 1090, 1640, 2180, 4360, 4469, 8938, 17876, 22345, 35752, 44690, 89380, 178760]

約数ペア:

[(1, 178760), (2, 89380), (4, 44690), (5, 35752), (8, 22345), (10, 17876), (20, 8938), (40, 4469), (41, 4360), (82, 2180), (109, 1640), (164, 1090), (205, 872), (218, 820), (328, 545), (410, 436)]