20312670

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{491}}^1$

素因数の和:705

約数の個数: 64

約数和(自身を含む): 56111616

約数和(自身を除く): 35798946

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 197, 210, 394, 491, 591, 982, 985, 1182, 1379, 1473, 1970, 2455, 2758, 2946, 2955, 3437, 4137, 4910, 5910, 6874, 6895, 7365, 8274, 10311, 13790, 14730, 17185, 20622, 20685, 34370, 41370, 51555, 96727, 103110, 193454, 290181, 483635, 580362, 677089, 967270, 1354178, 1450905, 2031267, 2901810, 3385445, 4062534, 6770890, 10156335, 20312670]

約数ペア:

[(1, 20312670), (2, 10156335), (3, 6770890), (5, 4062534), (6, 3385445), (7, 2901810), (10, 2031267), (14, 1450905), (15, 1354178), (21, 967270), (30, 677089), (35, 580362), (42, 483635), (70, 290181), (105, 193454), (197, 103110), (210, 96727), (394, 51555), (491, 41370), (591, 34370), (982, 20685), (985, 20622), (1182, 17185), (1379, 14730), (1473, 13790), (1970, 10311), (2455, 8274), (2758, 7365), (2946, 6895), (2955, 6874), (3437, 5910), (4137, 4910)]