21888741

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{461}}^1$

素因数の和:514

約数の個数: 48

約数和(自身を含む): 37920960

約数和(自身を除く): 16032219

約数列:

[1, 3, 7, 17, 19, 21, 49, 51, 57, 119, 133, 147, 323, 357, 399, 461, 833, 931, 969, 1383, 2261, 2499, 2793, 3227, 6783, 7837, 8759, 9681, 15827, 22589, 23511, 26277, 47481, 54859, 61313, 67767, 148903, 164577, 183939, 384013, 429191, 446709, 1042321, 1152039, 1287573, 3126963, 7296247, 21888741]

約数ペア:

[(1, 21888741), (3, 7296247), (7, 3126963), (17, 1287573), (19, 1152039), (21, 1042321), (49, 446709), (51, 429191), (57, 384013), (119, 183939), (133, 164577), (147, 148903), (323, 67767), (357, 61313), (399, 54859), (461, 47481), (833, 26277), (931, 23511), (969, 22589), (1383, 15827), (2261, 9681), (2499, 8759), (2793, 7837), (3227, 6783)]