21059013

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{1783}}^1$

素因数の和:1944

約数の個数: 16

約数和(自身を含む): 29229056

約数和(自身を除く): 8170043

約数列:

[1, 3, 31, 93, 127, 381, 1783, 3937, 5349, 11811, 55273, 165819, 226441, 679323, 7019671, 21059013]

約数ペア:

[(1, 21059013), (3, 7019671), (31, 679323), (93, 226441), (127, 165819), (381, 55273), (1783, 11811), (3937, 5349)]