20997756

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{44867}}^1$

素因数の和:44890

約数の個数: 36

約数和(自身を含む): 57161832

約数和(自身を除く): 36164076

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 234, 468, 44867, 89734, 134601, 179468, 269202, 403803, 538404, 583271, 807606, 1166542, 1615212, 1749813, 2333084, 3499626, 5249439, 6999252, 10498878, 20997756]

約数ペア:

[(1, 20997756), (2, 10498878), (3, 6999252), (4, 5249439), (6, 3499626), (9, 2333084), (12, 1749813), (13, 1615212), (18, 1166542), (26, 807606), (36, 583271), (39, 538404), (52, 403803), (78, 269202), (117, 179468), (156, 134601), (234, 89734), (468, 44867)]