21030291

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{599}}^1$

素因数の和:735

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 10419309

約数列:

[1, 3, 9, 47, 83, 141, 249, 423, 599, 747, 1797, 3901, 5391, 11703, 28153, 35109, 49717, 84459, 149151, 253377, 447453, 2336699, 7010097, 21030291]

約数ペア:

[(1, 21030291), (3, 7010097), (9, 2336699), (47, 447453), (83, 253377), (141, 149151), (249, 84459), (423, 49717), (599, 35109), (747, 28153), (1797, 11703), (3901, 5391)]