18243309

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{227}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 28892160

約数和(自身を除く): 10648851

約数列:

[1, 3, 7, 21, 43, 89, 129, 227, 267, 301, 623, 681, 903, 1589, 1869, 3827, 4767, 9761, 11481, 20203, 26789, 29283, 60609, 68327, 80367, 141421, 204981, 424263, 868729, 2606187, 6081103, 18243309]

約数ペア:

[(1, 18243309), (3, 6081103), (7, 2606187), (21, 868729), (43, 424263), (89, 204981), (129, 141421), (227, 80367), (267, 68327), (301, 60609), (623, 29283), (681, 26789), (903, 20203), (1589, 11481), (1869, 9761), (3827, 4767)]