1291238840

素因数分解:

$2^3\times 5^1\times {\mathrm{7537}}^1\times {\mathrm{4283}}^1$

素因数の和:11831

約数の個数: 32

約数和(自身を含む): 2906351280

約数和(自身を除く): 1615112440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4283, 7537, 8566, 15074, 17132, 21415, 30148, 34264, 37685, 42830, 60296, 75370, 85660, 150740, 171320, 301480, 32280971, 64561942, 129123884, 161404855, 258247768, 322809710, 645619420, 1291238840]

約数ペア:

[(1, 1291238840), (2, 645619420), (4, 322809710), (5, 258247768), (8, 161404855), (10, 129123884), (20, 64561942), (40, 32280971), (4283, 301480), (7537, 171320), (8566, 150740), (15074, 85660), (17132, 75370), (21415, 60296), (30148, 42830), (34264, 37685)]