18851612

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{353}}^1$

素因数の和:462

約数の個数: 36

約数和(自身を含む): 36277920

約数和(自身を除く): 17426308

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 169, 316, 338, 353, 676, 706, 1027, 1412, 2054, 4108, 4589, 9178, 13351, 18356, 26702, 27887, 53404, 55774, 59657, 111548, 119314, 238628, 362531, 725062, 1450124, 4712903, 9425806, 18851612]

約数ペア:

[(1, 18851612), (2, 9425806), (4, 4712903), (13, 1450124), (26, 725062), (52, 362531), (79, 238628), (158, 119314), (169, 111548), (316, 59657), (338, 55774), (353, 53404), (676, 27887), (706, 26702), (1027, 18356), (1412, 13351), (2054, 9178), (4108, 4589)]