12778840

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1913}}^1$

素因数の和:2091

約数の個数: 32

約数和(自身を含む): 28939680

約数和(自身を除く): 16160840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 1913, 3340, 3826, 6680, 7652, 9565, 15304, 19130, 38260, 76520, 319471, 638942, 1277884, 1597355, 2555768, 3194710, 6389420, 12778840]

約数ペア:

[(1, 12778840), (2, 6389420), (4, 3194710), (5, 2555768), (8, 1597355), (10, 1277884), (20, 638942), (40, 319471), (167, 76520), (334, 38260), (668, 19130), (835, 15304), (1336, 9565), (1670, 7652), (1913, 6680), (3340, 3826)]