21218626

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{439}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 37699200

約数和(自身を除く): 16480574

約数列:

[1, 2, 11, 13, 22, 26, 143, 169, 286, 338, 439, 878, 1859, 2197, 3718, 4394, 4829, 5707, 9658, 11414, 24167, 48334, 62777, 74191, 125554, 148382, 816101, 964483, 1632202, 1928966, 10609313, 21218626]

約数ペア:

[(1, 21218626), (2, 10609313), (11, 1928966), (13, 1632202), (22, 964483), (26, 816101), (143, 148382), (169, 125554), (286, 74191), (338, 62777), (439, 48334), (878, 24167), (1859, 11414), (2197, 9658), (3718, 5707), (4394, 4829)]