21149303756

素因数分解:

$2^2\times 7^2\times {\mathrm{443}}^1\times {\mathrm{243577}}^1$

素因数の和:244038

約数の個数: 36

約数和(自身を含む): 43151304168

約数和(自身を除く): 22002000412

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 443, 886, 1772, 3101, 6202, 12404, 21707, 43414, 86828, 243577, 487154, 974308, 1705039, 3410078, 6820156, 11935273, 23870546, 47741092, 107904611, 215809222, 431618444, 755332277, 1510664554, 3021329108, 5287325939, 10574651878, 21149303756]

約数ペア:

[(1, 21149303756), (2, 10574651878), (4, 5287325939), (7, 3021329108), (14, 1510664554), (28, 755332277), (49, 431618444), (98, 215809222), (196, 107904611), (443, 47741092), (886, 23870546), (1772, 11935273), (3101, 6820156), (6202, 3410078), (12404, 1705039), (21707, 974308), (43414, 487154), (86828, 243577)]