20671105

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{251}}^1$

素因数の和:457

約数の個数: 32

約数和(自身を含む): 30820608

約数和(自身を除く): 10149503

約数列:

[1, 5, 7, 13, 35, 65, 91, 181, 251, 455, 905, 1255, 1267, 1757, 2353, 3263, 6335, 8785, 11765, 16315, 16471, 22841, 45431, 82355, 114205, 227155, 318017, 590603, 1590085, 2953015, 4134221, 20671105]

約数ペア:

[(1, 20671105), (5, 4134221), (7, 2953015), (13, 1590085), (35, 590603), (65, 318017), (91, 227155), (181, 114205), (251, 82355), (455, 45431), (905, 22841), (1255, 16471), (1267, 16315), (1757, 11765), (2353, 8785), (3263, 6335)]