21297392

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:405

約数の個数: 40

約数和(自身を含む): 42663936

約数和(自身を除く): 21366544

約数列:

[1, 2, 4, 8, 16, 47, 94, 127, 188, 223, 254, 376, 446, 508, 752, 892, 1016, 1784, 2032, 3568, 5969, 10481, 11938, 20962, 23876, 28321, 41924, 47752, 56642, 83848, 95504, 113284, 167696, 226568, 453136, 1331087, 2662174, 5324348, 10648696, 21297392]

約数ペア:

[(1, 21297392), (2, 10648696), (4, 5324348), (8, 2662174), (16, 1331087), (47, 453136), (94, 226568), (127, 167696), (188, 113284), (223, 95504), (254, 83848), (376, 56642), (446, 47752), (508, 41924), (752, 28321), (892, 23876), (1016, 20962), (1784, 11938), (2032, 10481), (3568, 5969)]