18519020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{5479}}^1$

素因数の和:5514

約数の個数: 36

約数和(自身を含む): 42119280

約数和(自身を除く): 23600260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 5479, 10958, 21916, 27395, 54790, 71227, 109580, 142454, 284908, 356135, 712270, 925951, 1424540, 1851902, 3703804, 4629755, 9259510, 18519020]

約数ペア:

[(1, 18519020), (2, 9259510), (4, 4629755), (5, 3703804), (10, 1851902), (13, 1424540), (20, 925951), (26, 712270), (52, 356135), (65, 284908), (130, 142454), (169, 109580), (260, 71227), (338, 54790), (676, 27395), (845, 21916), (1690, 10958), (3380, 5479)]