20807515876

素因数分解:

$2^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{743}}^1\times {\mathrm{5077}}^1$

素因数の和:6028

約数の個数: 48

約数和(自身を含む): 41890818816

約数和(自身を除く): 21083302940

約数列:

[1, 2, 4, 7, 14, 28, 197, 394, 743, 788, 1379, 1486, 2758, 2972, 5077, 5201, 5516, 10154, 10402, 20308, 20804, 35539, 71078, 142156, 146371, 292742, 585484, 1000169, 1024597, 2000338, 2049194, 3772211, 4000676, 4098388, 7001183, 7544422, 14002366, 15088844, 26405477, 28004732, 52810954, 105621908, 743125567, 1486251134, 2972502268, 5201878969, 10403757938, 20807515876]

約数ペア:

[(1, 20807515876), (2, 10403757938), (4, 5201878969), (7, 2972502268), (14, 1486251134), (28, 743125567), (197, 105621908), (394, 52810954), (743, 28004732), (788, 26405477), (1379, 15088844), (1486, 14002366), (2758, 7544422), (2972, 7001183), (5077, 4098388), (5201, 4000676), (5516, 3772211), (10154, 2049194), (10402, 2000338), (20308, 1024597), (20804, 1000169), (35539, 585484), (71078, 292742), (142156, 146371)]