21129740

素因数分解:

$2^2\times 5^1\times {\mathrm{577}}^1\times {\mathrm{1831}}^1$

素因数の和:2417

約数の個数: 24

約数和(自身を含む): 44473632

約数和(自身を除く): 23343892

約数列:

[1, 2, 4, 5, 10, 20, 577, 1154, 1831, 2308, 2885, 3662, 5770, 7324, 9155, 11540, 18310, 36620, 1056487, 2112974, 4225948, 5282435, 10564870, 21129740]

約数ペア:

[(1, 21129740), (2, 10564870), (4, 5282435), (5, 4225948), (10, 2112974), (20, 1056487), (577, 36620), (1154, 18310), (1831, 11540), (2308, 9155), (2885, 7324), (3662, 5770)]