21521817

素因数分解:

$3^2\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{613}}^1$

素因数の和:749

約数の個数: 24

約数和(自身を含む): 32183424

約数和(自身を除く): 10661607

約数列:

[1, 3, 9, 47, 83, 141, 249, 423, 613, 747, 1839, 3901, 5517, 11703, 28811, 35109, 50879, 86433, 152637, 259299, 457911, 2391313, 7173939, 21521817]

約数ペア:

[(1, 21521817), (3, 7173939), (9, 2391313), (47, 457911), (83, 259299), (141, 152637), (249, 86433), (423, 50879), (613, 35109), (747, 28811), (1839, 11703), (3901, 5517)]