31321640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{111863}}^1$

素因数の和:111881

約数の個数: 32

約数和(自身を含む): 80542080

約数和(自身を除く): 49220440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 111863, 223726, 447452, 559315, 783041, 894904, 1118630, 1566082, 2237260, 3132164, 3915205, 4474520, 6264328, 7830410, 15660820, 31321640]

約数ペア:

[(1, 31321640), (2, 15660820), (4, 7830410), (5, 6264328), (7, 4474520), (8, 3915205), (10, 3132164), (14, 2237260), (20, 1566082), (28, 1118630), (35, 894904), (40, 783041), (56, 559315), (70, 447452), (140, 223726), (280, 111863)]