20684755

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^3\times {\mathrm{269}}^1$

素因数の和:320

約数の個数: 32

約数和(自身を含む): 30844800

約数和(自身を除く): 10160045

約数列:

[1, 5, 7, 13, 35, 65, 91, 169, 269, 455, 845, 1183, 1345, 1883, 2197, 3497, 5915, 9415, 10985, 15379, 17485, 24479, 45461, 76895, 122395, 227305, 318227, 590993, 1591135, 2954965, 4136951, 20684755]

約数ペア:

[(1, 20684755), (5, 4136951), (7, 2954965), (13, 1591135), (35, 590993), (65, 318227), (91, 227305), (169, 122395), (269, 76895), (455, 45461), (845, 24479), (1183, 17485), (1345, 15379), (1883, 10985), (2197, 9415), (3497, 5915)]