21564116

素因数分解:

$2^2\times 7^2\times {\mathrm{269}}^1\times {\mathrm{409}}^1$

素因数の和:696

約数の個数: 36

約数和(自身を含む): 44169300

約数和(自身を除く): 22605184

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 269, 409, 538, 818, 1076, 1636, 1883, 2863, 3766, 5726, 7532, 11452, 13181, 20041, 26362, 40082, 52724, 80164, 110021, 220042, 440084, 770147, 1540294, 3080588, 5391029, 10782058, 21564116]

約数ペア:

[(1, 21564116), (2, 10782058), (4, 5391029), (7, 3080588), (14, 1540294), (28, 770147), (49, 440084), (98, 220042), (196, 110021), (269, 80164), (409, 52724), (538, 40082), (818, 26362), (1076, 20041), (1636, 13181), (1883, 11452), (2863, 7532), (3766, 5726)]