20668808

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{135979}}^1$

素因数の和:136004

約数の個数: 16

約数和(自身を含む): 40794000

約数和(自身を除く): 20125192

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 135979, 271958, 543916, 1087832, 2583601, 5167202, 10334404, 20668808]

約数ペア:

[(1, 20668808), (2, 10334404), (4, 5167202), (8, 2583601), (19, 1087832), (38, 543916), (76, 271958), (152, 135979)]