21504273

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{139}}^2$

素因数の和:341

約数の個数: 24

約数和(自身を含む): 33628608

約数和(自身を除く): 12124335

約数列:

[1, 3, 7, 21, 53, 139, 159, 371, 417, 973, 1113, 2919, 7367, 19321, 22101, 51569, 57963, 135247, 154707, 405741, 1024013, 3072039, 7168091, 21504273]

約数ペア:

[(1, 21504273), (3, 7168091), (7, 3072039), (21, 1024013), (53, 405741), (139, 154707), (159, 135247), (371, 57963), (417, 51569), (973, 22101), (1113, 19321), (2919, 7367)]