19708668

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{397}}^1$

素因数の和:611

約数の個数: 72

約数和(自身を含む): 57369312

約数和(自身を除く): 37660644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 197, 252, 394, 397, 591, 788, 794, 1182, 1191, 1379, 1588, 1773, 2364, 2382, 2758, 2779, 3546, 3573, 4137, 4764, 5516, 5558, 7092, 7146, 8274, 8337, 11116, 12411, 14292, 16548, 16674, 24822, 25011, 33348, 49644, 50022, 78209, 100044, 156418, 234627, 312836, 469254, 547463, 703881, 938508, 1094926, 1407762, 1642389, 2189852, 2815524, 3284778, 4927167, 6569556, 9854334, 19708668]

約数ペア:

[(1, 19708668), (2, 9854334), (3, 6569556), (4, 4927167), (6, 3284778), (7, 2815524), (9, 2189852), (12, 1642389), (14, 1407762), (18, 1094926), (21, 938508), (28, 703881), (36, 547463), (42, 469254), (63, 312836), (84, 234627), (126, 156418), (197, 100044), (252, 78209), (394, 50022), (397, 49644), (591, 33348), (788, 25011), (794, 24822), (1182, 16674), (1191, 16548), (1379, 14292), (1588, 12411), (1773, 11116), (2364, 8337), (2382, 8274), (2758, 7146), (2779, 7092), (3546, 5558), (3573, 5516), (4137, 4764)]