21878158

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{6469}}^1$

素因数の和:6579

約数の個数: 16

約数和(自身を含む): 34938000

約数和(自身を除く): 13059842

約数列:

[1, 2, 19, 38, 89, 178, 1691, 3382, 6469, 12938, 122911, 245822, 575741, 1151482, 10939079, 21878158]

約数ペア:

[(1, 21878158), (2, 10939079), (19, 1151482), (38, 575741), (89, 245822), (178, 122911), (1691, 12938), (3382, 6469)]