21000681219

素因数分解:

$3^1\times 7^2\times {\mathrm{2179}}^1\times {\mathrm{65563}}^1$

素因数の和:67759

約数の個数: 24

約数和(自身を含む): 32587930560

約数和(自身を除く): 11587249341

約数列:

[1, 3, 7, 21, 49, 147, 2179, 6537, 15253, 45759, 65563, 106771, 196689, 320313, 458941, 1376823, 3212587, 9637761, 142861777, 428585331, 1000032439, 3000097317, 7000227073, 21000681219]

約数ペア:

[(1, 21000681219), (3, 7000227073), (7, 3000097317), (21, 1000032439), (49, 428585331), (147, 142861777), (2179, 9637761), (6537, 3212587), (15253, 1376823), (45759, 458941), (65563, 320313), (106771, 196689)]