21837764

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2$

素因数の和:121

約数の個数: 72

約数和(自身を含む): 46710720

約数和(自身を除く): 24872956

約数列:

[1, 2, 4, 13, 19, 23, 26, 31, 38, 46, 52, 62, 76, 92, 124, 247, 299, 403, 437, 494, 589, 598, 713, 806, 874, 961, 988, 1178, 1196, 1426, 1612, 1748, 1922, 2356, 2852, 3844, 5681, 7657, 9269, 11362, 12493, 13547, 15314, 18259, 18538, 22103, 22724, 24986, 27094, 30628, 36518, 37076, 44206, 49972, 54188, 73036, 88412, 176111, 237367, 287339, 352222, 419957, 474734, 574678, 704444, 839914, 949468, 1149356, 1679828, 5459441, 10918882, 21837764]

約数ペア:

[(1, 21837764), (2, 10918882), (4, 5459441), (13, 1679828), (19, 1149356), (23, 949468), (26, 839914), (31, 704444), (38, 574678), (46, 474734), (52, 419957), (62, 352222), (76, 287339), (92, 237367), (124, 176111), (247, 88412), (299, 73036), (403, 54188), (437, 49972), (494, 44206), (589, 37076), (598, 36518), (713, 30628), (806, 27094), (874, 24986), (961, 22724), (988, 22103), (1178, 18538), (1196, 18259), (1426, 15314), (1612, 13547), (1748, 12493), (1922, 11362), (2356, 9269), (2852, 7657), (3844, 5681)]