20802131

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{683}}^1$

素因数の和:938

約数の個数: 16

約数和(自身を含む): 25171200

約数和(自身を除く): 4369069

約数列:

[1, 7, 19, 133, 229, 683, 1603, 4351, 4781, 12977, 30457, 90839, 156407, 1094849, 2971733, 20802131]

約数ペア:

[(1, 20802131), (7, 2971733), (19, 1094849), (133, 156407), (229, 90839), (683, 30457), (1603, 12977), (4351, 4781)]