21273681

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{2917}}^1$

素因数の和:2961

約数の個数: 32

約数和(自身を含む): 35296128

約数和(自身を除く): 14022447

約数列:

[1, 3, 11, 13, 17, 33, 39, 51, 143, 187, 221, 429, 561, 663, 2431, 2917, 7293, 8751, 32087, 37921, 49589, 96261, 113763, 148767, 417131, 545479, 644657, 1251393, 1636437, 1933971, 7091227, 21273681]

約数ペア:

[(1, 21273681), (3, 7091227), (11, 1933971), (13, 1636437), (17, 1251393), (33, 644657), (39, 545479), (51, 417131), (143, 148767), (187, 113763), (221, 96261), (429, 49589), (561, 37921), (663, 32087), (2431, 8751), (2917, 7293)]