21212808

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{463}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 56125440

約数和(自身を除く): 34912632

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 69, 83, 92, 138, 166, 184, 249, 276, 332, 463, 498, 552, 664, 926, 996, 1389, 1852, 1909, 1992, 2778, 3704, 3818, 5556, 5727, 7636, 10649, 11112, 11454, 15272, 21298, 22908, 31947, 38429, 42596, 45816, 63894, 76858, 85192, 115287, 127788, 153716, 230574, 255576, 307432, 461148, 883867, 922296, 1767734, 2651601, 3535468, 5303202, 7070936, 10606404, 21212808]

約数ペア:

[(1, 21212808), (2, 10606404), (3, 7070936), (4, 5303202), (6, 3535468), (8, 2651601), (12, 1767734), (23, 922296), (24, 883867), (46, 461148), (69, 307432), (83, 255576), (92, 230574), (138, 153716), (166, 127788), (184, 115287), (249, 85192), (276, 76858), (332, 63894), (463, 45816), (498, 42596), (552, 38429), (664, 31947), (926, 22908), (996, 21298), (1389, 15272), (1852, 11454), (1909, 11112), (1992, 10649), (2778, 7636), (3704, 5727), (3818, 5556)]