21180237

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1$

素因数の和:413

約数の個数: 32

約数和(自身を含む): 32081280

約数和(自身を除く): 10901043

約数列:

[1, 3, 13, 29, 39, 61, 87, 183, 307, 377, 793, 921, 1131, 1769, 2379, 3991, 5307, 8903, 11973, 18727, 22997, 26709, 56181, 68991, 115739, 243451, 347217, 543083, 730353, 1629249, 7060079, 21180237]

約数ペア:

[(1, 21180237), (3, 7060079), (13, 1629249), (29, 730353), (39, 543083), (61, 347217), (87, 243451), (183, 115739), (307, 68991), (377, 56181), (793, 26709), (921, 22997), (1131, 18727), (1769, 11973), (2379, 8903), (3991, 5307)]