2191720

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 4977000

約数和(自身を除く): 2785280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 349, 628, 698, 785, 1256, 1396, 1570, 1745, 2792, 3140, 3490, 6280, 6980, 13960, 54793, 109586, 219172, 273965, 438344, 547930, 1095860, 2191720]

約数ペア:

[(1, 2191720), (2, 1095860), (4, 547930), (5, 438344), (8, 273965), (10, 219172), (20, 109586), (40, 54793), (157, 13960), (314, 6980), (349, 6280), (628, 3490), (698, 3140), (785, 2792), (1256, 1745), (1396, 1570)]