12578840

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2003}}^1$

素因数の和:2171

約数の個数: 32

約数和(自身を含む): 28496880

約数和(自身を除く): 15918040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 2003, 3140, 4006, 6280, 8012, 10015, 16024, 20030, 40060, 80120, 314471, 628942, 1257884, 1572355, 2515768, 3144710, 6289420, 12578840]

約数ペア:

[(1, 12578840), (2, 6289420), (4, 3144710), (5, 2515768), (8, 1572355), (10, 1257884), (20, 628942), (40, 314471), (157, 80120), (314, 40060), (628, 20030), (785, 16024), (1256, 10015), (1570, 8012), (2003, 6280), (3140, 4006)]