20675403

素因数分解:

$3^2\times 7^2\times {\mathrm{173}}^1\times {\mathrm{271}}^1$

素因数の和:464

約数の個数: 36

約数和(自身を含む): 35070048

約数和(自身を除く): 14394645

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 173, 271, 441, 519, 813, 1211, 1557, 1897, 2439, 3633, 5691, 8477, 10899, 13279, 17073, 25431, 39837, 46883, 76293, 119511, 140649, 328181, 421947, 984543, 2297267, 2953629, 6891801, 20675403]

約数ペア:

[(1, 20675403), (3, 6891801), (7, 2953629), (9, 2297267), (21, 984543), (49, 421947), (63, 328181), (147, 140649), (173, 119511), (271, 76293), (441, 46883), (519, 39837), (813, 25431), (1211, 17073), (1557, 13279), (1897, 10899), (2439, 8477), (3633, 5691)]