21711988

素因数分解:

$2^2\times {\mathrm{103}}^1\times {\mathrm{151}}^1\times {\mathrm{349}}^1$

素因数の和:607

約数の個数: 24

約数和(自身を含む): 38729600

約数和(自身を除く): 17017612

約数列:

[1, 2, 4, 103, 151, 206, 302, 349, 412, 604, 698, 1396, 15553, 31106, 35947, 52699, 62212, 71894, 105398, 143788, 210796, 5427997, 10855994, 21711988]

約数ペア:

[(1, 21711988), (2, 10855994), (4, 5427997), (103, 210796), (151, 143788), (206, 105398), (302, 71894), (349, 62212), (412, 52699), (604, 35947), (698, 31106), (1396, 15553)]