20972910

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{99871}}^1$

素因数の和:99888

約数の個数: 32

約数和(自身を含む): 57526272

約数和(自身を除く): 36553362

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 99871, 199742, 299613, 499355, 599226, 699097, 998710, 1398194, 1498065, 2097291, 2996130, 3495485, 4194582, 6990970, 10486455, 20972910]

約数ペア:

[(1, 20972910), (2, 10486455), (3, 6990970), (5, 4194582), (6, 3495485), (7, 2996130), (10, 2097291), (14, 1498065), (15, 1398194), (21, 998710), (30, 699097), (35, 599226), (42, 499355), (70, 299613), (105, 199742), (210, 99871)]