21352090

素因数分解:

$2^1\times 5^1\times {\mathrm{271}}^1\times {\mathrm{7879}}^1$

素因数の和:8157

約数の個数: 16

約数和(自身を含む): 38580480

約数和(自身を除く): 17228390

約数列:

[1, 2, 5, 10, 271, 542, 1355, 2710, 7879, 15758, 39395, 78790, 2135209, 4270418, 10676045, 21352090]

約数ペア:

[(1, 21352090), (2, 10676045), (5, 4270418), (10, 2135209), (271, 78790), (542, 39395), (1355, 15758), (2710, 7879)]