21471219

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30983}}^1$

素因数の和:31007

約数の個数: 24

約数和(自身を含む): 38668032

約数和(自身を除く): 17196813

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30983, 92949, 216881, 278847, 340813, 650643, 1022439, 1951929, 2385691, 3067317, 7157073, 21471219]

約数ペア:

[(1, 21471219), (3, 7157073), (7, 3067317), (9, 2385691), (11, 1951929), (21, 1022439), (33, 650643), (63, 340813), (77, 278847), (99, 216881), (231, 92949), (693, 30983)]