20949994

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{7823}}^1$

素因数の和:7941

約数の個数: 16

約数和(自身を含む): 34175232

約数和(自身を除く): 13225238

約数列:

[1, 2, 13, 26, 103, 206, 1339, 2678, 7823, 15646, 101699, 203398, 805769, 1611538, 10474997, 20949994]

約数ペア:

[(1, 20949994), (2, 10474997), (13, 1611538), (26, 805769), (103, 203398), (206, 101699), (1339, 15646), (2678, 7823)]