21000980242

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{1381}}^1\times {\mathrm{691231}}^1$

素因数の和:692625

約数の個数: 16

約数和(自身を含む): 34390174464

約数和(自身を除く): 13389194222

約数列:

[1, 2, 11, 22, 1381, 2762, 15191, 30382, 691231, 1382462, 7603541, 15207082, 954590011, 1909180022, 10500490121, 21000980242]

約数ペア:

[(1, 21000980242), (2, 10500490121), (11, 1909180022), (22, 954590011), (1381, 15207082), (2762, 7603541), (15191, 1382462), (30382, 691231)]