19905487

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{3559}}^1$

素因数の和:3630

約数の個数: 16

約数和(自身を含む): 24606720

約数和(自身を除く): 4701233

約数列:

[1, 7, 17, 47, 119, 329, 799, 3559, 5593, 24913, 60503, 167273, 423521, 1170911, 2843641, 19905487]

約数ペア:

[(1, 19905487), (7, 2843641), (17, 1170911), (47, 423521), (119, 167273), (329, 60503), (799, 24913), (3559, 5593)]