21418243

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{503}}^1$

素因数の和:607

約数の個数: 24

約数和(自身を含む): 27578880

約数和(自身を除く): 6160637

約数列:

[1, 7, 11, 49, 77, 79, 503, 539, 553, 869, 3521, 3871, 5533, 6083, 24647, 38731, 39737, 42581, 271117, 278159, 437107, 1947113, 3059749, 21418243]

約数ペア:

[(1, 21418243), (7, 3059749), (11, 1947113), (49, 437107), (77, 278159), (79, 271117), (503, 42581), (539, 39737), (553, 38731), (869, 24647), (3521, 6083), (3871, 5533)]