21985929

素因数分解:

$3^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{2141}}^1$

素因数の和:2317

約数の個数: 24

約数和(自身を含む): 36533952

約数和(自身を除く): 14548023

約数列:

[1, 3, 7, 9, 21, 63, 163, 489, 1141, 1467, 2141, 3423, 6423, 10269, 14987, 19269, 44961, 134883, 348983, 1046949, 2442881, 3140847, 7328643, 21985929]

約数ペア:

[(1, 21985929), (3, 7328643), (7, 3140847), (9, 2442881), (21, 1046949), (63, 348983), (163, 134883), (489, 44961), (1141, 19269), (1467, 14987), (2141, 10269), (3423, 6423)]