20007460

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{457}}^1$

素因数の和:676

約数の個数: 48

約数和(自身を含む): 46166400

約数和(自身を除く): 26158940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 199, 220, 398, 457, 796, 914, 995, 1828, 1990, 2189, 2285, 3980, 4378, 4570, 5027, 8756, 9140, 10054, 10945, 20108, 21890, 25135, 43780, 50270, 90943, 100540, 181886, 363772, 454715, 909430, 1000373, 1818860, 2000746, 4001492, 5001865, 10003730, 20007460]

約数ペア:

[(1, 20007460), (2, 10003730), (4, 5001865), (5, 4001492), (10, 2000746), (11, 1818860), (20, 1000373), (22, 909430), (44, 454715), (55, 363772), (110, 181886), (199, 100540), (220, 90943), (398, 50270), (457, 43780), (796, 25135), (914, 21890), (995, 20108), (1828, 10945), (1990, 10054), (2189, 9140), (2285, 8756), (3980, 5027), (4378, 4570)]