21299360

素因数分解:

$2^5\times 5^1\times {\mathrm{133121}}^1$

素因数の和:133136

約数の個数: 24

約数和(自身を含む): 50320116

約数和(自身を除く): 29020756

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 133121, 266242, 532484, 665605, 1064968, 1331210, 2129936, 2662420, 4259872, 5324840, 10649680, 21299360]

約数ペア:

[(1, 21299360), (2, 10649680), (4, 5324840), (5, 4259872), (8, 2662420), (10, 2129936), (16, 1331210), (20, 1064968), (32, 665605), (40, 532484), (80, 266242), (160, 133121)]