20821210

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{90527}}^1$

素因数の和:90557

約数の個数: 16

約数和(自身を含む): 39108096

約数和(自身を除く): 18286886

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 90527, 181054, 452635, 905270, 2082121, 4164242, 10410605, 20821210]

約数ペア:

[(1, 20821210), (2, 10410605), (5, 4164242), (10, 2082121), (23, 905270), (46, 452635), (115, 181054), (230, 90527)]