21031778247

素因数分解:

$3^1\times {\mathrm{157}}^1\times {\mathrm{307}}^1\times {\mathrm{145451}}^1$

素因数の和:145918

約数の個数: 16

約数和(自身を含む): 28313104512

約数和(自身を除く): 7281326265

約数列:

[1, 3, 157, 307, 471, 921, 48199, 144597, 145451, 436353, 22835807, 44653457, 68507421, 133960371, 7010592749, 21031778247]

約数ペア:

[(1, 21031778247), (3, 7010592749), (157, 133960371), (307, 68507421), (471, 44653457), (921, 22835807), (48199, 436353), (144597, 145451)]