266240

素因数分解:

$2^{12}\times 5^1\times {\mathrm{13}}^1$

素因数の和:42

約数の個数: 52

約数和(自身を含む): 688044

約数和(自身を除く): 421804

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 512, 520, 640, 832, 1024, 1040, 1280, 1664, 2048, 2080, 2560, 3328, 4096, 4160, 5120, 6656, 8320, 10240, 13312, 16640, 20480, 26624, 33280, 53248, 66560, 133120, 266240]

約数ペア:

[(1, 266240), (2, 133120), (4, 66560), (5, 53248), (8, 33280), (10, 26624), (13, 20480), (16, 16640), (20, 13312), (26, 10240), (32, 8320), (40, 6656), (52, 5120), (64, 4160), (65, 4096), (80, 3328), (104, 2560), (128, 2080), (130, 2048), (160, 1664), (208, 1280), (256, 1040), (260, 1024), (320, 832), (416, 640), (512, 520)]