21629780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63617}}^1$

素因数の和:63643

約数の個数: 24

約数和(自身を含む): 48095208

約数和(自身を除く): 26465428

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63617, 127234, 254468, 318085, 636170, 1081489, 1272340, 2162978, 4325956, 5407445, 10814890, 21629780]

約数ペア:

[(1, 21629780), (2, 10814890), (4, 5407445), (5, 4325956), (10, 2162978), (17, 1272340), (20, 1081489), (34, 636170), (68, 318085), (85, 254468), (170, 127234), (340, 63617)]