31427271

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{787}}^1$

素因数の和:845

約数の個数: 40

約数和(自身を含む): 51487920

約数和(自身を除く): 20060649

約数列:

[1, 3, 9, 17, 27, 29, 51, 81, 87, 153, 261, 459, 493, 783, 787, 1377, 1479, 2349, 2361, 4437, 7083, 13311, 13379, 21249, 22823, 39933, 40137, 63747, 68469, 120411, 205407, 361233, 387991, 616221, 1083699, 1163973, 1848663, 3491919, 10475757, 31427271]

約数ペア:

[(1, 31427271), (3, 10475757), (9, 3491919), (17, 1848663), (27, 1163973), (29, 1083699), (51, 616221), (81, 387991), (87, 361233), (153, 205407), (261, 120411), (459, 68469), (493, 63747), (783, 40137), (787, 39933), (1377, 22823), (1479, 21249), (2349, 13379), (2361, 13311), (4437, 7083)]