20645716

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4363}}^1$

素因数の和:4400

約数の個数: 36

約数和(自身を含む): 44722272

約数和(自身を除く): 24076556

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4363, 4732, 8726, 17452, 30541, 56719, 61082, 113438, 122164, 226876, 397033, 737347, 794066, 1474694, 1588132, 2949388, 5161429, 10322858, 20645716]

約数ペア:

[(1, 20645716), (2, 10322858), (4, 5161429), (7, 2949388), (13, 1588132), (14, 1474694), (26, 794066), (28, 737347), (52, 397033), (91, 226876), (169, 122164), (182, 113438), (338, 61082), (364, 56719), (676, 30541), (1183, 17452), (2366, 8726), (4363, 4732)]