12911680

素因数分解:

$2^6\times 5^1\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:431

約数の個数: 56

約数和(自身を含む): 31062168

約数和(自身を除く): 18150488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 157, 160, 257, 314, 320, 514, 628, 785, 1028, 1256, 1285, 1570, 2056, 2512, 2570, 3140, 4112, 5024, 5140, 6280, 8224, 10048, 10280, 12560, 16448, 20560, 25120, 40349, 41120, 50240, 80698, 82240, 161396, 201745, 322792, 403490, 645584, 806980, 1291168, 1613960, 2582336, 3227920, 6455840, 12911680]

約数ペア:

[(1, 12911680), (2, 6455840), (4, 3227920), (5, 2582336), (8, 1613960), (10, 1291168), (16, 806980), (20, 645584), (32, 403490), (40, 322792), (64, 201745), (80, 161396), (157, 82240), (160, 80698), (257, 50240), (314, 41120), (320, 40349), (514, 25120), (628, 20560), (785, 16448), (1028, 12560), (1256, 10280), (1285, 10048), (1570, 8224), (2056, 6280), (2512, 5140), (2570, 5024), (3140, 4112)]