21133941

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 10799499

約数列:

[1, 3, 17, 23, 43, 51, 69, 129, 391, 419, 731, 989, 1173, 1257, 2193, 2967, 7123, 9637, 16813, 18017, 21369, 28911, 50439, 54051, 163829, 306289, 414391, 491487, 918867, 1243173, 7044647, 21133941]

約数ペア:

[(1, 21133941), (3, 7044647), (17, 1243173), (23, 918867), (43, 491487), (51, 414391), (69, 306289), (129, 163829), (391, 54051), (419, 50439), (731, 28911), (989, 21369), (1173, 18017), (1257, 16813), (2193, 9637), (2967, 7123)]