20900124

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{421}}^1$

素因数の和:635

約数の個数: 72

約数和(自身を含む): 60828768

約数和(自身を除く): 39928644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 197, 252, 394, 421, 591, 788, 842, 1182, 1263, 1379, 1684, 1773, 2364, 2526, 2758, 2947, 3546, 3789, 4137, 5052, 5516, 5894, 7092, 7578, 8274, 8841, 11788, 12411, 15156, 16548, 17682, 24822, 26523, 35364, 49644, 53046, 82937, 106092, 165874, 248811, 331748, 497622, 580559, 746433, 995244, 1161118, 1492866, 1741677, 2322236, 2985732, 3483354, 5225031, 6966708, 10450062, 20900124]

約数ペア:

[(1, 20900124), (2, 10450062), (3, 6966708), (4, 5225031), (6, 3483354), (7, 2985732), (9, 2322236), (12, 1741677), (14, 1492866), (18, 1161118), (21, 995244), (28, 746433), (36, 580559), (42, 497622), (63, 331748), (84, 248811), (126, 165874), (197, 106092), (252, 82937), (394, 53046), (421, 49644), (591, 35364), (788, 26523), (842, 24822), (1182, 17682), (1263, 16548), (1379, 15156), (1684, 12411), (1773, 11788), (2364, 8841), (2526, 8274), (2758, 7578), (2947, 7092), (3546, 5894), (3789, 5516), (4137, 5052)]