19998275521

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{1291}}^1\times {\mathrm{59809}}^1$

素因数の和:61144

約数の個数: 16

約数和(自身を含む): 23491454080

約数和(自身を除く): 3493178559

約数列:

[1, 7, 37, 259, 1291, 9037, 47767, 59809, 334369, 418663, 2212933, 15490531, 77213419, 540493933, 2856896503, 19998275521]

約数ペア:

[(1, 19998275521), (7, 2856896503), (37, 540493933), (259, 77213419), (1291, 15490531), (9037, 2212933), (47767, 418663), (59809, 334369)]