21953217

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{701}}^1$

素因数の和:801

約数の個数: 32

約数和(自身を含む): 34909056

約数和(自身を除く): 12955839

約数列:

[1, 3, 11, 13, 33, 39, 73, 143, 219, 429, 701, 803, 949, 2103, 2409, 2847, 7711, 9113, 10439, 23133, 27339, 31317, 51173, 100243, 153519, 300729, 562903, 665249, 1688709, 1995747, 7317739, 21953217]

約数ペア:

[(1, 21953217), (3, 7317739), (11, 1995747), (13, 1688709), (33, 665249), (39, 562903), (73, 300729), (143, 153519), (219, 100243), (429, 51173), (701, 31317), (803, 27339), (949, 23133), (2103, 10439), (2409, 9113), (2847, 7711)]