21071559

素因数分解:

$3^1\times {\mathrm{137}}^1\times {\mathrm{167}}^1\times {\mathrm{307}}^1$

素因数の和:614

約数の個数: 16

約数和(自身を含む): 28562688

約数和(自身を除く): 7491129

約数列:

[1, 3, 137, 167, 307, 411, 501, 921, 22879, 42059, 51269, 68637, 126177, 153807, 7023853, 21071559]

約数ペア:

[(1, 21071559), (3, 7023853), (137, 153807), (167, 126177), (307, 68637), (411, 51269), (501, 42059), (921, 22879)]