138663280

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{247613}}^1$

素因数の和:247633

約数の個数: 40

約数和(自身を含む): 368449632

約数和(自身を除く): 229786352

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 247613, 495226, 990452, 1238065, 1733291, 1980904, 2476130, 3466582, 3961808, 4952260, 6933164, 8666455, 9904520, 13866328, 17332910, 19809040, 27732656, 34665820, 69331640, 138663280]

約数ペア:

[(1, 138663280), (2, 69331640), (4, 34665820), (5, 27732656), (7, 19809040), (8, 17332910), (10, 13866328), (14, 9904520), (16, 8666455), (20, 6933164), (28, 4952260), (35, 3961808), (40, 3466582), (56, 2476130), (70, 1980904), (80, 1733291), (112, 1238065), (140, 990452), (280, 495226), (560, 247613)]