21022001

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{21001}}^1$

素因数の和:21032

約数の個数: 16

約数和(自身を含む): 28226688

約数和(自身を除く): 7204687

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 21001, 147007, 231011, 273013, 1617077, 1911091, 3003143, 21022001]

約数ペア:

[(1, 21022001), (7, 3003143), (11, 1911091), (13, 1617077), (77, 273013), (91, 231011), (143, 147007), (1001, 21001)]