18745988

素因数分解:

$2^2\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:667

約数の個数: 24

約数和(自身を含む): 33566400

約数和(自身を除く): 14820412

約数列:

[1, 2, 4, 71, 142, 149, 284, 298, 443, 596, 886, 1772, 10579, 21158, 31453, 42316, 62906, 66007, 125812, 132014, 264028, 4686497, 9372994, 18745988]

約数ペア:

[(1, 18745988), (2, 9372994), (4, 4686497), (71, 264028), (142, 132014), (149, 125812), (284, 66007), (298, 62906), (443, 42316), (596, 31453), (886, 21158), (1772, 10579)]