21541079

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{1087}}^1$

素因数の和:1262

約数の個数: 16

約数和(自身を含む): 26112000

約数和(自身を除く): 4570921

約数列:

[1, 7, 19, 133, 149, 1043, 1087, 2831, 7609, 19817, 20653, 144571, 161963, 1133741, 3077297, 21541079]

約数ペア:

[(1, 21541079), (7, 3077297), (19, 1133741), (133, 161963), (149, 144571), (1043, 20653), (1087, 19817), (2831, 7609)]