21521357

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^2$

素因数の和:221

約数の個数: 24

約数和(自身を含む): 26916960

約数和(自身を除く): 5395603

約数列:

[1, 11, 13, 19, 89, 143, 209, 247, 979, 1157, 1691, 2717, 7921, 12727, 18601, 21983, 87131, 102973, 150499, 241813, 1132703, 1655489, 1956487, 21521357]

約数ペア:

[(1, 21521357), (11, 1956487), (13, 1655489), (19, 1132703), (89, 241813), (143, 150499), (209, 102973), (247, 87131), (979, 21983), (1157, 18601), (1691, 12727), (2717, 7921)]