81397729

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 101580800

約数和(自身を除く): 20183071

約数列:

[1, 7, 19, 61, 79, 127, 133, 427, 553, 889, 1159, 1501, 2413, 4819, 7747, 8113, 10033, 10507, 16891, 33733, 54229, 70231, 91561, 147193, 190627, 612013, 640927, 1030351, 1334389, 4284091, 11628247, 81397729]

約数ペア:

[(1, 81397729), (7, 11628247), (19, 4284091), (61, 1334389), (79, 1030351), (127, 640927), (133, 612013), (427, 190627), (553, 147193), (889, 91561), (1159, 70231), (1501, 54229), (2413, 33733), (4819, 16891), (7747, 10507), (8113, 10033)]