18878755090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{859297}}^1$

素因数の和:859343

約数の個数: 32

約数和(自身を含む): 36812326320

約数和(自身を除く): 17933571230

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 1690, 2197, 4394, 10985, 21970, 859297, 1718594, 4296485, 8592970, 11170861, 22341722, 55854305, 111708610, 145221193, 290442386, 726105965, 1452211930, 1887875509, 3775751018, 9439377545, 18878755090]

約数ペア:

[(1, 18878755090), (2, 9439377545), (5, 3775751018), (10, 1887875509), (13, 1452211930), (26, 726105965), (65, 290442386), (130, 145221193), (169, 111708610), (338, 55854305), (845, 22341722), (1690, 11170861), (2197, 8592970), (4394, 4296485), (10985, 1718594), (21970, 859297)]