21070413

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1979}}^1$

素因数の和:2018

約数の個数: 36

約数和(自身を含む): 37683360

約数和(自身を除く): 16612947

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 169, 273, 507, 819, 1183, 1521, 1979, 3549, 5937, 10647, 13853, 17811, 25727, 41559, 77181, 124677, 180089, 231543, 334451, 540267, 1003353, 1620801, 2341157, 3010059, 7023471, 21070413]

約数ペア:

[(1, 21070413), (3, 7023471), (7, 3010059), (9, 2341157), (13, 1620801), (21, 1003353), (39, 540267), (63, 334451), (91, 231543), (117, 180089), (169, 124677), (273, 77181), (507, 41559), (819, 25727), (1183, 17811), (1521, 13853), (1979, 10647), (3549, 5937)]