21089820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{351497}}^1$

素因数の和:351509

約数の個数: 24

約数和(自身を含む): 59051664

約数和(自身を除く): 37961844

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 351497, 702994, 1054491, 1405988, 1757485, 2108982, 3514970, 4217964, 5272455, 7029940, 10544910, 21089820]

約数ペア:

[(1, 21089820), (2, 10544910), (3, 7029940), (4, 5272455), (5, 4217964), (6, 3514970), (10, 2108982), (12, 1757485), (15, 1405988), (20, 1054491), (30, 702994), (60, 351497)]