20170381

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{811}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 28062720

約数和(自身を除く): 7892339

約数列:

[1, 7, 11, 17, 19, 77, 119, 133, 187, 209, 323, 811, 1309, 1463, 2261, 3553, 5677, 8921, 13787, 15409, 24871, 62447, 96509, 107863, 151657, 169499, 261953, 1061599, 1186493, 1833671, 2881483, 20170381]

約数ペア:

[(1, 20170381), (7, 2881483), (11, 1833671), (17, 1186493), (19, 1061599), (77, 261953), (119, 169499), (133, 151657), (187, 107863), (209, 96509), (323, 62447), (811, 24871), (1309, 15409), (1463, 13787), (2261, 8921), (3553, 5677)]