21807288

素因数分解:

$2^3\times 3^2\times {\mathrm{19}}^2\times {\mathrm{839}}^1$

素因数の和:889

約数の個数: 72

約数和(自身を含む): 62407800

約数和(自身を除く): 40600512

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 19, 24, 36, 38, 57, 72, 76, 114, 152, 171, 228, 342, 361, 456, 684, 722, 839, 1083, 1368, 1444, 1678, 2166, 2517, 2888, 3249, 3356, 4332, 5034, 6498, 6712, 7551, 8664, 10068, 12996, 15102, 15941, 20136, 25992, 30204, 31882, 47823, 60408, 63764, 95646, 127528, 143469, 191292, 286938, 302879, 382584, 573876, 605758, 908637, 1147752, 1211516, 1817274, 2423032, 2725911, 3634548, 5451822, 7269096, 10903644, 21807288]

約数ペア:

[(1, 21807288), (2, 10903644), (3, 7269096), (4, 5451822), (6, 3634548), (8, 2725911), (9, 2423032), (12, 1817274), (18, 1211516), (19, 1147752), (24, 908637), (36, 605758), (38, 573876), (57, 382584), (72, 302879), (76, 286938), (114, 191292), (152, 143469), (171, 127528), (228, 95646), (342, 63764), (361, 60408), (456, 47823), (684, 31882), (722, 30204), (839, 25992), (1083, 20136), (1368, 15941), (1444, 15102), (1678, 12996), (2166, 10068), (2517, 8664), (2888, 7551), (3249, 6712), (3356, 6498), (4332, 5034)]