21872439

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{3457}}^1$

素因数の和:3519

約数の個数: 24

約数和(自身を含む): 34165040

約数和(自身を除く): 12292601

約数列:

[1, 3, 9, 19, 37, 57, 111, 171, 333, 703, 2109, 3457, 6327, 10371, 31113, 65683, 127909, 197049, 383727, 591147, 1151181, 2430271, 7290813, 21872439]

約数ペア:

[(1, 21872439), (3, 7290813), (9, 2430271), (19, 1151181), (37, 591147), (57, 383727), (111, 197049), (171, 127909), (333, 65683), (703, 31113), (2109, 10371), (3457, 6327)]