18660563817

素因数分解:

$3^1\times 7^2\times {\mathrm{191}}^1\times {\mathrm{664621}}^1$

素因数の和:664829

約数の個数: 24

約数和(自身を含む): 29094492672

約数和(自身を除く): 10433928855

約数列:

[1, 3, 7, 21, 49, 147, 191, 573, 1337, 4011, 9359, 28077, 664621, 1993863, 4652347, 13957041, 32566429, 97699287, 126942611, 380827833, 888598277, 2665794831, 6220187939, 18660563817]

約数ペア:

[(1, 18660563817), (3, 6220187939), (7, 2665794831), (21, 888598277), (49, 380827833), (147, 126942611), (191, 97699287), (573, 32566429), (1337, 13957041), (4011, 4652347), (9359, 1993863), (28077, 664621)]