20754279

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{8447}}^1$

素因数の和:8476

約数の個数: 32

約数和(自身を含む): 37847040

約数和(自身を除く): 17092761

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457, 8447, 25341, 59129, 76023, 109811, 177387, 228069, 329433, 532161, 768677, 988299, 1596483, 2306031, 2964897, 6918093, 20754279]

約数ペア:

[(1, 20754279), (3, 6918093), (7, 2964897), (9, 2306031), (13, 1596483), (21, 988299), (27, 768677), (39, 532161), (63, 329433), (91, 228069), (117, 177387), (189, 109811), (273, 76023), (351, 59129), (819, 25341), (2457, 8447)]