21115780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150827}}^1$

素因数の和:150843

約数の個数: 24

約数和(自身を含む): 50678208

約数和(自身を除く): 29562428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150827, 301654, 603308, 754135, 1055789, 1508270, 2111578, 3016540, 4223156, 5278945, 10557890, 21115780]

約数ペア:

[(1, 21115780), (2, 10557890), (4, 5278945), (5, 4223156), (7, 3016540), (10, 2111578), (14, 1508270), (20, 1055789), (28, 754135), (35, 603308), (70, 301654), (140, 150827)]