17918740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{859}}^1$

素因数の和:1024

約数の個数: 48

約数和(自身を含む): 43344000

約数和(自身を除く): 25425260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 298, 596, 745, 859, 1043, 1490, 1718, 2086, 2980, 3436, 4172, 4295, 5215, 6013, 8590, 10430, 12026, 17180, 20860, 24052, 30065, 60130, 120260, 127991, 255982, 511964, 639955, 895937, 1279910, 1791874, 2559820, 3583748, 4479685, 8959370, 17918740]

約数ペア:

[(1, 17918740), (2, 8959370), (4, 4479685), (5, 3583748), (7, 2559820), (10, 1791874), (14, 1279910), (20, 895937), (28, 639955), (35, 511964), (70, 255982), (140, 127991), (149, 120260), (298, 60130), (596, 30065), (745, 24052), (859, 20860), (1043, 17180), (1490, 12026), (1718, 10430), (2086, 8590), (2980, 6013), (3436, 5215), (4172, 4295)]