21031980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{167}}^1\times {\mathrm{2099}}^1$

素因数の和:2278

約数の個数: 48

約数和(自身を含む): 59270400

約数和(自身を除く): 38238420

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 167, 334, 501, 668, 835, 1002, 1670, 2004, 2099, 2505, 3340, 4198, 5010, 6297, 8396, 10020, 10495, 12594, 20990, 25188, 31485, 41980, 62970, 125940, 350533, 701066, 1051599, 1402132, 1752665, 2103198, 3505330, 4206396, 5257995, 7010660, 10515990, 21031980]

約数ペア:

[(1, 21031980), (2, 10515990), (3, 7010660), (4, 5257995), (5, 4206396), (6, 3505330), (10, 2103198), (12, 1752665), (15, 1402132), (20, 1051599), (30, 701066), (60, 350533), (167, 125940), (334, 62970), (501, 41980), (668, 31485), (835, 25188), (1002, 20990), (1670, 12594), (2004, 10495), (2099, 10020), (2505, 8396), (3340, 6297), (4198, 5010)]