21408543

素因数分解:

$3^8\times {\mathrm{13}}^1\times {\mathrm{251}}^1$

素因数の和:288

約数の個数: 36

約数和(自身を含む): 34719048

約数和(自身を除く): 13310505

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 251, 351, 729, 753, 1053, 2187, 2259, 3159, 3263, 6561, 6777, 9477, 9789, 20331, 28431, 29367, 60993, 85293, 88101, 182979, 264303, 548937, 792909, 1646811, 2378727, 7136181, 21408543]

約数ペア:

[(1, 21408543), (3, 7136181), (9, 2378727), (13, 1646811), (27, 792909), (39, 548937), (81, 264303), (117, 182979), (243, 88101), (251, 85293), (351, 60993), (729, 29367), (753, 28431), (1053, 20331), (2187, 9789), (2259, 9477), (3159, 6777), (3263, 6561)]