12991780

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{463}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 28998144

約数和(自身を除く): 16006364

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 61, 92, 115, 122, 230, 244, 305, 460, 463, 610, 926, 1220, 1403, 1852, 2315, 2806, 4630, 5612, 7015, 9260, 10649, 14030, 21298, 28060, 28243, 42596, 53245, 56486, 106490, 112972, 141215, 212980, 282430, 564860, 649589, 1299178, 2598356, 3247945, 6495890, 12991780]

約数ペア:

[(1, 12991780), (2, 6495890), (4, 3247945), (5, 2598356), (10, 1299178), (20, 649589), (23, 564860), (46, 282430), (61, 212980), (92, 141215), (115, 112972), (122, 106490), (230, 56486), (244, 53245), (305, 42596), (460, 28243), (463, 28060), (610, 21298), (926, 14030), (1220, 10649), (1403, 9260), (1852, 7015), (2315, 5612), (2806, 4630)]