21804286

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{81971}}^1$

素因数の和:81999

約数の個数: 16

約数和(自身を含む): 39346560

約数和(自身を除く): 17542274

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 81971, 163942, 573797, 1147594, 1557449, 3114898, 10902143, 21804286]

約数ペア:

[(1, 21804286), (2, 10902143), (7, 3114898), (14, 1557449), (19, 1147594), (38, 573797), (133, 163942), (266, 81971)]