172220

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1$

素因数の和:197

約数の個数: 24

約数和(自身を含む): 369600

約数和(自身を除く): 197380

約数列:

[1, 2, 4, 5, 10, 20, 79, 109, 158, 218, 316, 395, 436, 545, 790, 1090, 1580, 2180, 8611, 17222, 34444, 43055, 86110, 172220]

約数ペア:

[(1, 172220), (2, 86110), (4, 43055), (5, 34444), (10, 17222), (20, 8611), (79, 2180), (109, 1580), (158, 1090), (218, 790), (316, 545), (395, 436)]