21431679

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{83}}^2$

素因数の和:247

約数の個数: 24

約数和(自身を含む): 31127472

約数和(自身を除く): 9695793

約数列:

[1, 3, 17, 51, 61, 83, 183, 249, 1037, 1411, 3111, 4233, 5063, 6889, 15189, 20667, 86071, 117113, 258213, 351339, 420229, 1260687, 7143893, 21431679]

約数ペア:

[(1, 21431679), (3, 7143893), (17, 1260687), (51, 420229), (61, 351339), (83, 258213), (183, 117113), (249, 86071), (1037, 20667), (1411, 15189), (3111, 6889), (4233, 5063)]