21760719

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{71}}^1\times {\mathrm{283}}^1$

素因数の和:395

約数の個数: 24

約数和(自身を含む): 31162752

約数和(自身を除く): 9402033

約数列:

[1, 3, 19, 57, 71, 213, 283, 361, 849, 1083, 1349, 4047, 5377, 16131, 20093, 25631, 60279, 76893, 102163, 306489, 381767, 1145301, 7253573, 21760719]

約数ペア:

[(1, 21760719), (3, 7253573), (19, 1145301), (57, 381767), (71, 306489), (213, 102163), (283, 76893), (361, 60279), (849, 25631), (1083, 20093), (1349, 16131), (4047, 5377)]