20539415

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:363

約数の個数: 24

約数和(自身を含む): 27054720

約数和(自身を除く): 6515305

約数列:

[1, 5, 13, 65, 109, 169, 223, 545, 845, 1115, 1417, 2899, 7085, 14495, 18421, 24307, 37687, 92105, 121535, 188435, 315991, 1579955, 4107883, 20539415]

約数ペア:

[(1, 20539415), (5, 4107883), (13, 1579955), (65, 315991), (109, 188435), (169, 121535), (223, 92105), (545, 37687), (845, 24307), (1115, 18421), (1417, 14495), (2899, 7085)]