12428120

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{1979}}^1$

素因数の和:2147

約数の個数: 32

約数和(自身を含む): 28155600

約数和(自身を除く): 15727480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 1979, 3140, 3958, 6280, 7916, 9895, 15832, 19790, 39580, 79160, 310703, 621406, 1242812, 1553515, 2485624, 3107030, 6214060, 12428120]

約数ペア:

[(1, 12428120), (2, 6214060), (4, 3107030), (5, 2485624), (8, 1553515), (10, 1242812), (20, 621406), (40, 310703), (157, 79160), (314, 39580), (628, 19790), (785, 15832), (1256, 9895), (1570, 7916), (1979, 6280), (3140, 3958)]