21195944

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1811}}^1$

素因数の和:1854

約数の個数: 64

約数和(自身を含む): 52185600

約数和(自身を除く): 30989656

約数列:

[1, 2, 4, 7, 8, 11, 14, 19, 22, 28, 38, 44, 56, 76, 77, 88, 133, 152, 154, 209, 266, 308, 418, 532, 616, 836, 1064, 1463, 1672, 1811, 2926, 3622, 5852, 7244, 11704, 12677, 14488, 19921, 25354, 34409, 39842, 50708, 68818, 79684, 101416, 137636, 139447, 159368, 240863, 275272, 278894, 378499, 481726, 557788, 756998, 963452, 1115576, 1513996, 1926904, 2649493, 3027992, 5298986, 10597972, 21195944]

約数ペア:

[(1, 21195944), (2, 10597972), (4, 5298986), (7, 3027992), (8, 2649493), (11, 1926904), (14, 1513996), (19, 1115576), (22, 963452), (28, 756998), (38, 557788), (44, 481726), (56, 378499), (76, 278894), (77, 275272), (88, 240863), (133, 159368), (152, 139447), (154, 137636), (209, 101416), (266, 79684), (308, 68818), (418, 50708), (532, 39842), (616, 34409), (836, 25354), (1064, 19921), (1463, 14488), (1672, 12677), (1811, 11704), (2926, 7244), (3622, 5852)]