21242043

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{131}}^1\times {\mathrm{419}}^1$

素因数の和:599

約数の個数: 24

約数和(自身を含む): 31711680

約数和(自身を除く): 10469637

約数列:

[1, 3, 9, 43, 129, 131, 387, 393, 419, 1179, 1257, 3771, 5633, 16899, 18017, 50697, 54051, 54889, 162153, 164667, 494001, 2360227, 7080681, 21242043]

約数ペア:

[(1, 21242043), (3, 7080681), (9, 2360227), (43, 494001), (129, 164667), (131, 162153), (387, 54889), (393, 54051), (419, 50697), (1179, 18017), (1257, 16899), (3771, 5633)]