20957980

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{17761}}^1$

素因数の和:17829

約数の個数: 24

約数和(自身を含む): 44760240

約数和(自身を除く): 23802260

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 17761, 35522, 71044, 88805, 177610, 355220, 1047899, 2095798, 4191596, 5239495, 10478990, 20957980]

約数ペア:

[(1, 20957980), (2, 10478990), (4, 5239495), (5, 4191596), (10, 2095798), (20, 1047899), (59, 355220), (118, 177610), (236, 88805), (295, 71044), (590, 35522), (1180, 17761)]