21703780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{155027}}^1$

素因数の和:155043

約数の個数: 24

約数和(自身を含む): 52089408

約数和(自身を除く): 30385628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 155027, 310054, 620108, 775135, 1085189, 1550270, 2170378, 3100540, 4340756, 5425945, 10851890, 21703780]

約数ペア:

[(1, 21703780), (2, 10851890), (4, 5425945), (5, 4340756), (7, 3100540), (10, 2170378), (14, 1550270), (20, 1085189), (28, 775135), (35, 620108), (70, 310054), (140, 155027)]