20405006

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1\times {\mathrm{829}}^1$

素因数の和:1259

約数の個数: 16

約数和(自身を含む): 31712640

約数和(自身を除く): 11307634

約数列:

[1, 2, 31, 62, 397, 794, 829, 1658, 12307, 24614, 25699, 51398, 329113, 658226, 10202503, 20405006]

約数ペア:

[(1, 20405006), (2, 10202503), (31, 658226), (62, 329113), (397, 51398), (794, 25699), (829, 24614), (1658, 12307)]