21155056

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:194

約数の個数: 80

約数和(自身を含む): 47809440

約数和(自身を除く): 26654384

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 53, 76, 101, 104, 106, 152, 202, 208, 212, 247, 304, 404, 424, 494, 689, 808, 848, 988, 1007, 1313, 1378, 1616, 1919, 1976, 2014, 2626, 2756, 3838, 3952, 4028, 5252, 5353, 5512, 7676, 8056, 10504, 10706, 11024, 13091, 15352, 16112, 21008, 21412, 24947, 26182, 30704, 42824, 49894, 52364, 69589, 85648, 99788, 101707, 104728, 139178, 199576, 203414, 209456, 278356, 399152, 406828, 556712, 813656, 1113424, 1322191, 1627312, 2644382, 5288764, 10577528, 21155056]

約数ペア:

[(1, 21155056), (2, 10577528), (4, 5288764), (8, 2644382), (13, 1627312), (16, 1322191), (19, 1113424), (26, 813656), (38, 556712), (52, 406828), (53, 399152), (76, 278356), (101, 209456), (104, 203414), (106, 199576), (152, 139178), (202, 104728), (208, 101707), (212, 99788), (247, 85648), (304, 69589), (404, 52364), (424, 49894), (494, 42824), (689, 30704), (808, 26182), (848, 24947), (988, 21412), (1007, 21008), (1313, 16112), (1378, 15352), (1616, 13091), (1919, 11024), (1976, 10706), (2014, 10504), (2626, 8056), (2756, 7676), (3838, 5512), (3952, 5353), (4028, 5252)]