20863388

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4409}}^1$

素因数の和:4446

約数の個数: 36

約数和(自身を含む): 45193680

約数和(自身を除く): 24330292

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4409, 4732, 8818, 17636, 30863, 57317, 61726, 114634, 123452, 229268, 401219, 745121, 802438, 1490242, 1604876, 2980484, 5215847, 10431694, 20863388]

約数ペア:

[(1, 20863388), (2, 10431694), (4, 5215847), (7, 2980484), (13, 1604876), (14, 1490242), (26, 802438), (28, 745121), (52, 401219), (91, 229268), (169, 123452), (182, 114634), (338, 61726), (364, 57317), (676, 30863), (1183, 17636), (2366, 8818), (4409, 4732)]