1315840

素因数分解:

$2^{10}\times 5^1\times {\mathrm{257}}^1$

素因数の和:282

約数の個数: 44

約数和(自身を含む): 3168756

約数和(自身を除く): 1852916

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 257, 320, 512, 514, 640, 1024, 1028, 1280, 1285, 2056, 2560, 2570, 4112, 5120, 5140, 8224, 10280, 16448, 20560, 32896, 41120, 65792, 82240, 131584, 164480, 263168, 328960, 657920, 1315840]

約数ペア:

[(1, 1315840), (2, 657920), (4, 328960), (5, 263168), (8, 164480), (10, 131584), (16, 82240), (20, 65792), (32, 41120), (40, 32896), (64, 20560), (80, 16448), (128, 10280), (160, 8224), (256, 5140), (257, 5120), (320, 4112), (512, 2570), (514, 2560), (640, 2056), (1024, 1285), (1028, 1280)]