18181996

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20947}}^1$

素因数の和:20989

約数の個数: 24

約数和(自身を含む): 37538816

約数和(自身を除く): 19356820

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 20947, 41894, 83788, 146629, 293258, 586516, 649357, 1298714, 2597428, 4545499, 9090998, 18181996]

約数ペア:

[(1, 18181996), (2, 9090998), (4, 4545499), (7, 2597428), (14, 1298714), (28, 649357), (31, 586516), (62, 293258), (124, 146629), (217, 83788), (434, 41894), (868, 20947)]