1991350210

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{63439}}^1$

素因数の和:63562

約数の個数: 32

約数和(自身を含む): 3718091520

約数和(自身を除く): 1726741310

約数列:

[1, 2, 5, 10, 43, 73, 86, 146, 215, 365, 430, 730, 3139, 6278, 15695, 31390, 63439, 126878, 317195, 634390, 2727877, 4631047, 5455754, 9262094, 13639385, 23155235, 27278770, 46310470, 199135021, 398270042, 995675105, 1991350210]

約数ペア:

[(1, 1991350210), (2, 995675105), (5, 398270042), (10, 199135021), (43, 46310470), (73, 27278770), (86, 23155235), (146, 13639385), (215, 9262094), (365, 5455754), (430, 4631047), (730, 2727877), (3139, 634390), (6278, 317195), (15695, 126878), (31390, 63439)]