81649155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{1999}}^1$

素因数の和:2403

約数の個数: 32

約数和(自身を含む): 149760000

約数和(自身を除く): 68110845

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 389, 1167, 1945, 1999, 2723, 5835, 5997, 8169, 9995, 13615, 13993, 29985, 40845, 41979, 69965, 209895, 777611, 2332833, 3888055, 5443277, 11664165, 16329831, 27216385, 81649155]

約数ペア:

[(1, 81649155), (3, 27216385), (5, 16329831), (7, 11664165), (15, 5443277), (21, 3888055), (35, 2332833), (105, 777611), (389, 209895), (1167, 69965), (1945, 41979), (1999, 40845), (2723, 29985), (5835, 13993), (5997, 13615), (8169, 9995)]