21221651

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1721}}^1$

素因数の和:1810

約数の個数: 16

約数和(自身を含む): 24796800

約数和(自身を除く): 3575149

約数列:

[1, 11, 19, 59, 209, 649, 1121, 1721, 12331, 18931, 32699, 101539, 359689, 1116929, 1929241, 21221651]

約数ペア:

[(1, 21221651), (11, 1929241), (19, 1116929), (59, 359689), (209, 101539), (649, 32699), (1121, 18931), (1721, 12331)]