19901203

素因数分解:

$7^3\times {\mathrm{17}}^1\times {\mathrm{3413}}^1$

素因数の和:3451

約数の個数: 16

約数和(自身を含む): 24580800

約数和(自身を除く): 4679597

約数列:

[1, 7, 17, 49, 119, 343, 833, 3413, 5831, 23891, 58021, 167237, 406147, 1170659, 2843029, 19901203]

約数ペア:

[(1, 19901203), (7, 2843029), (17, 1170659), (49, 406147), (119, 167237), (343, 58021), (833, 23891), (3413, 5831)]