20154140

素因数分解:

$2^2\times 5^1\times {\mathrm{631}}^1\times {\mathrm{1597}}^1$

素因数の和:2237

約数の個数: 24

約数和(自身を含む): 42417312

約数和(自身を除く): 22263172

約数列:

[1, 2, 4, 5, 10, 20, 631, 1262, 1597, 2524, 3155, 3194, 6310, 6388, 7985, 12620, 15970, 31940, 1007707, 2015414, 4030828, 5038535, 10077070, 20154140]

約数ペア:

[(1, 20154140), (2, 10077070), (4, 5038535), (5, 4030828), (10, 2015414), (20, 1007707), (631, 31940), (1262, 15970), (1597, 12620), (2524, 7985), (3155, 6388), (3194, 6310)]