21347256

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{449}}^1$

素因数の和:748

約数の個数: 64

約数和(自身を含む): 61344000

約数和(自身を除く): 39996744

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168, 283, 449, 566, 849, 898, 1132, 1347, 1698, 1796, 1981, 2264, 2694, 3143, 3396, 3592, 3962, 5388, 5943, 6286, 6792, 7924, 9429, 10776, 11886, 12572, 15848, 18858, 23772, 25144, 37716, 47544, 75432, 127067, 254134, 381201, 508268, 762402, 889469, 1016536, 1524804, 1778938, 2668407, 3049608, 3557876, 5336814, 7115752, 10673628, 21347256]

約数ペア:

[(1, 21347256), (2, 10673628), (3, 7115752), (4, 5336814), (6, 3557876), (7, 3049608), (8, 2668407), (12, 1778938), (14, 1524804), (21, 1016536), (24, 889469), (28, 762402), (42, 508268), (56, 381201), (84, 254134), (168, 127067), (283, 75432), (449, 47544), (566, 37716), (849, 25144), (898, 23772), (1132, 18858), (1347, 15848), (1698, 12572), (1796, 11886), (1981, 10776), (2264, 9429), (2694, 7924), (3143, 6792), (3396, 6286), (3592, 5943), (3962, 5388)]