20518380

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{37997}}^1$

素因数の和:38015

約数の個数: 48

約数和(自身を含む): 63836640

約数和(自身を除く): 43318260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 37997, 75994, 113991, 151988, 189985, 227982, 341973, 379970, 455964, 569955, 683946, 759940, 1025919, 1139910, 1367892, 1709865, 2051838, 2279820, 3419730, 4103676, 5129595, 6839460, 10259190, 20518380]

約数ペア:

[(1, 20518380), (2, 10259190), (3, 6839460), (4, 5129595), (5, 4103676), (6, 3419730), (9, 2279820), (10, 2051838), (12, 1709865), (15, 1367892), (18, 1139910), (20, 1025919), (27, 759940), (30, 683946), (36, 569955), (45, 455964), (54, 379970), (60, 341973), (90, 227982), (108, 189985), (135, 151988), (180, 113991), (270, 75994), (540, 37997)]