20905485

素因数分解:

$3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{13799}}^1$

素因数の和:13908

約数の個数: 16

約数和(自身を含む): 33782400

約数和(自身を除く): 12876915

約数列:

[1, 3, 5, 15, 101, 303, 505, 1515, 13799, 41397, 68995, 206985, 1393699, 4181097, 6968495, 20905485]

約数ペア:

[(1, 20905485), (3, 6968495), (5, 4181097), (15, 1393699), (101, 206985), (303, 68995), (505, 41397), (1515, 13799)]