21180315

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{2311}}^1$

素因数の和:2379

約数の個数: 32

約数和(自身を含む): 37287936

約数和(自身を除く): 16107621

約数列:

[1, 3, 5, 13, 15, 39, 47, 65, 141, 195, 235, 611, 705, 1833, 2311, 3055, 6933, 9165, 11555, 30043, 34665, 90129, 108617, 150215, 325851, 450645, 543085, 1412021, 1629255, 4236063, 7060105, 21180315]

約数ペア:

[(1, 21180315), (3, 7060105), (5, 4236063), (13, 1629255), (15, 1412021), (39, 543085), (47, 450645), (65, 325851), (141, 150215), (195, 108617), (235, 90129), (611, 34665), (705, 30043), (1833, 11555), (2311, 9165), (3055, 6933)]