21295520

素因数分解:

$2^5\times 5^1\times {\mathrm{133097}}^1$

素因数の和:133112

約数の個数: 24

約数和(自身を含む): 50311044

約数和(自身を除く): 29015524

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133097, 266194, 532388, 665485, 1064776, 1330970, 2129552, 2661940, 4259104, 5323880, 10647760, 21295520]

約数ペア:

[(1, 21295520), (2, 10647760), (4, 5323880), (5, 4259104), (8, 2661940), (10, 2129552), (16, 1330970), (20, 1064776), (32, 665485), (40, 532388), (80, 266194), (160, 133097)]