12678320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^2\times {\mathrm{439}}^1$

素因数の和:490

約数の個数: 60

約数和(自身を含む): 31181040

約数和(自身を除く): 18502720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 361, 380, 439, 722, 760, 878, 1444, 1520, 1756, 1805, 2195, 2888, 3512, 3610, 4390, 5776, 7024, 7220, 8341, 8780, 14440, 16682, 17560, 28880, 33364, 35120, 41705, 66728, 83410, 133456, 158479, 166820, 316958, 333640, 633916, 667280, 792395, 1267832, 1584790, 2535664, 3169580, 6339160, 12678320]

約数ペア:

[(1, 12678320), (2, 6339160), (4, 3169580), (5, 2535664), (8, 1584790), (10, 1267832), (16, 792395), (19, 667280), (20, 633916), (38, 333640), (40, 316958), (76, 166820), (80, 158479), (95, 133456), (152, 83410), (190, 66728), (304, 41705), (361, 35120), (380, 33364), (439, 28880), (722, 17560), (760, 16682), (878, 14440), (1444, 8780), (1520, 8341), (1756, 7220), (1805, 7024), (2195, 5776), (2888, 4390), (3512, 3610)]