20999772

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^2\times {\mathrm{607}}^1$

素因数の和:679

約数の個数: 54

約数和(自身を含む): 54940704

約数和(自身を除く): 33940932

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 62, 93, 124, 186, 279, 372, 558, 607, 961, 1116, 1214, 1821, 1922, 2428, 2883, 3642, 3844, 5463, 5766, 7284, 8649, 10926, 11532, 17298, 18817, 21852, 34596, 37634, 56451, 75268, 112902, 169353, 225804, 338706, 583327, 677412, 1166654, 1749981, 2333308, 3499962, 5249943, 6999924, 10499886, 20999772]

約数ペア:

[(1, 20999772), (2, 10499886), (3, 6999924), (4, 5249943), (6, 3499962), (9, 2333308), (12, 1749981), (18, 1166654), (31, 677412), (36, 583327), (62, 338706), (93, 225804), (124, 169353), (186, 112902), (279, 75268), (372, 56451), (558, 37634), (607, 34596), (961, 21852), (1116, 18817), (1214, 17298), (1821, 11532), (1922, 10926), (2428, 8649), (2883, 7284), (3642, 5766), (3844, 5463)]