21000272956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{291169}}^1$

素因数の和:291278

約数の個数: 48

約数和(自身を含む): 42231296800

約数和(自身を除く): 21231023844

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 73, 76, 146, 247, 292, 494, 949, 988, 1387, 1898, 2774, 3796, 5548, 18031, 36062, 72124, 291169, 582338, 1164676, 3785197, 5532211, 7570394, 11064422, 15140788, 21255337, 22128844, 42510674, 71918743, 85021348, 143837486, 276319381, 287674972, 403851403, 552638762, 807702806, 1105277524, 1615405612, 5250068239, 10500136478, 21000272956]

約数ペア:

[(1, 21000272956), (2, 10500136478), (4, 5250068239), (13, 1615405612), (19, 1105277524), (26, 807702806), (38, 552638762), (52, 403851403), (73, 287674972), (76, 276319381), (146, 143837486), (247, 85021348), (292, 71918743), (494, 42510674), (949, 22128844), (988, 21255337), (1387, 15140788), (1898, 11064422), (2774, 7570394), (3796, 5532211), (5548, 3785197), (18031, 1164676), (36062, 582338), (72124, 291169)]