21201587

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1663}}^1$

素因数の和:1754

約数の個数: 16

約数和(自身を含む): 24760320

約数和(自身を除く): 3558733

約数列:

[1, 11, 19, 61, 209, 671, 1159, 1663, 12749, 18293, 31597, 101443, 347567, 1115873, 1927417, 21201587]

約数ペア:

[(1, 21201587), (11, 1927417), (19, 1115873), (61, 347567), (209, 101443), (671, 31597), (1159, 18293), (1663, 12749)]