21787264793

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{263}}^1\times {\mathrm{881}}^1$

素因数の和:1278

約数の個数: 48

約数和(自身を含む): 27075565440

約数和(自身を除く): 5288300647

約数列:

[1, 7, 19, 49, 101, 133, 263, 707, 881, 931, 1841, 1919, 4949, 4997, 6167, 12887, 13433, 16739, 26563, 34979, 43169, 88981, 94031, 117173, 185941, 231703, 244853, 504697, 622867, 820211, 1301587, 1621921, 1690639, 3532879, 4360069, 4402357, 11353447, 11834473, 23402003, 24730153, 30816499, 82841311, 163814021, 215715493, 444638057, 1146698147, 3112466399, 21787264793]

約数ペア:

[(1, 21787264793), (7, 3112466399), (19, 1146698147), (49, 444638057), (101, 215715493), (133, 163814021), (263, 82841311), (707, 30816499), (881, 24730153), (931, 23402003), (1841, 11834473), (1919, 11353447), (4949, 4402357), (4997, 4360069), (6167, 3532879), (12887, 1690639), (13433, 1621921), (16739, 1301587), (26563, 820211), (34979, 622867), (43169, 504697), (88981, 244853), (94031, 231703), (117173, 185941)]