19740170

素因数分解:

$2^1\times 5^1\times {\mathrm{257}}^1\times {\mathrm{7681}}^1$

素因数の和:7945

約数の個数: 16

約数和(自身を含む): 35675208

約数和(自身を除く): 15935038

約数列:

[1, 2, 5, 10, 257, 514, 1285, 2570, 7681, 15362, 38405, 76810, 1974017, 3948034, 9870085, 19740170]

約数ペア:

[(1, 19740170), (2, 9870085), (5, 3948034), (10, 1974017), (257, 76810), (514, 38405), (1285, 15362), (2570, 7681)]