20821845

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{2381}}^1$

素因数の和:2453

約数の個数: 32

約数和(自身を含む): 37044864

約数和(自身を除く): 16223019

約数列:

[1, 3, 5, 11, 15, 33, 53, 55, 159, 165, 265, 583, 795, 1749, 2381, 2915, 7143, 8745, 11905, 26191, 35715, 78573, 126193, 130955, 378579, 392865, 630965, 1388123, 1892895, 4164369, 6940615, 20821845]

約数ペア:

[(1, 20821845), (3, 6940615), (5, 4164369), (11, 1892895), (15, 1388123), (33, 630965), (53, 392865), (55, 378579), (159, 130955), (165, 126193), (265, 78573), (583, 35715), (795, 26191), (1749, 11905), (2381, 8745), (2915, 7143)]