21519998

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{3917}}^1$

素因数の和:4027

約数の個数: 16

約数和(自身を含む): 33569424

約数和(自身を除く): 12049426

約数列:

[1, 2, 41, 67, 82, 134, 2747, 3917, 5494, 7834, 160597, 262439, 321194, 524878, 10759999, 21519998]

約数ペア:

[(1, 21519998), (2, 10759999), (41, 524878), (67, 321194), (82, 262439), (134, 160597), (2747, 7834), (3917, 5494)]