21318154

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{569}}^1$

素因数の和:726

約数の個数: 32

約数和(自身を含む): 37920960

約数和(自身を除く): 16602806

約数列:

[1, 2, 11, 13, 22, 26, 131, 143, 262, 286, 569, 1138, 1441, 1703, 2882, 3406, 6259, 7397, 12518, 14794, 18733, 37466, 74539, 81367, 149078, 162734, 819929, 969007, 1639858, 1938014, 10659077, 21318154]

約数ペア:

[(1, 21318154), (2, 10659077), (11, 1938014), (13, 1639858), (22, 969007), (26, 819929), (131, 162734), (143, 149078), (262, 81367), (286, 74539), (569, 37466), (1138, 18733), (1441, 14794), (1703, 12518), (2882, 7397), (3406, 6259)]