21006531

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1973}}^1$

素因数の和:2012

約数の個数: 36

約数和(自身を含む): 37569168

約数和(自身を除く): 16562637

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 169, 273, 507, 819, 1183, 1521, 1973, 3549, 5919, 10647, 13811, 17757, 25649, 41433, 76947, 124299, 179543, 230841, 333437, 538629, 1000311, 1615887, 2334059, 3000933, 7002177, 21006531]

約数ペア:

[(1, 21006531), (3, 7002177), (7, 3000933), (9, 2334059), (13, 1615887), (21, 1000311), (39, 538629), (63, 333437), (91, 230841), (117, 179543), (169, 124299), (273, 76947), (507, 41433), (819, 25649), (1183, 17757), (1521, 13811), (1973, 10647), (3549, 5919)]