20455857

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{1307}}^1$

素因数の和:1397

約数の個数: 24

約数和(自身を含む): 31015296

約数和(自身を除く): 10559439

約数列:

[1, 3, 9, 37, 47, 111, 141, 333, 423, 1307, 1739, 3921, 5217, 11763, 15651, 48359, 61429, 145077, 184287, 435231, 552861, 2272873, 6818619, 20455857]

約数ペア:

[(1, 20455857), (3, 6818619), (9, 2272873), (37, 552861), (47, 435231), (111, 184287), (141, 145077), (333, 61429), (423, 48359), (1307, 15651), (1739, 11763), (3921, 5217)]