21407918

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{461}}^1$

素因数の和:608

約数の個数: 32

約数和(自身を含む): 38320128

約数和(自身を除く): 16912210

約数列:

[1, 2, 7, 14, 31, 62, 107, 214, 217, 434, 461, 749, 922, 1498, 3227, 3317, 6454, 6634, 14291, 23219, 28582, 46438, 49327, 98654, 100037, 200074, 345289, 690578, 1529137, 3058274, 10703959, 21407918]

約数ペア:

[(1, 21407918), (2, 10703959), (7, 3058274), (14, 1529137), (31, 690578), (62, 345289), (107, 200074), (214, 100037), (217, 98654), (434, 49327), (461, 46438), (749, 28582), (922, 23219), (1498, 14291), (3227, 6634), (3317, 6454)]