20343988

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:392

約数の個数: 48

約数和(自身を含む): 42469504

約数和(自身を除く): 22125516

約数列:

[1, 2, 4, 7, 14, 28, 43, 61, 86, 122, 172, 244, 277, 301, 427, 554, 602, 854, 1108, 1204, 1708, 1939, 2623, 3878, 5246, 7756, 10492, 11911, 16897, 18361, 23822, 33794, 36722, 47644, 67588, 73444, 83377, 118279, 166754, 236558, 333508, 473116, 726571, 1453142, 2906284, 5085997, 10171994, 20343988]

約数ペア:

[(1, 20343988), (2, 10171994), (4, 5085997), (7, 2906284), (14, 1453142), (28, 726571), (43, 473116), (61, 333508), (86, 236558), (122, 166754), (172, 118279), (244, 83377), (277, 73444), (301, 67588), (427, 47644), (554, 36722), (602, 33794), (854, 23822), (1108, 18361), (1204, 16897), (1708, 11911), (1939, 10492), (2623, 7756), (3878, 5246)]