20744941

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{2557}}^1$

素因数の和:2644

約数の個数: 16

約数和(自身を含む): 25375360

約数和(自身を除く): 4630419

約数列:

[1, 7, 19, 61, 133, 427, 1159, 2557, 8113, 17899, 48583, 155977, 340081, 1091839, 2963563, 20744941]

約数ペア:

[(1, 20744941), (7, 2963563), (19, 1091839), (61, 340081), (133, 155977), (427, 48583), (1159, 17899), (2557, 8113)]