21158740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{34127}}^1$

素因数の和:34167

約数の個数: 24

約数和(自身を含む): 45868032

約数和(自身を除く): 24709292

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 34127, 68254, 136508, 170635, 341270, 682540, 1057937, 2115874, 4231748, 5289685, 10579370, 21158740]

約数ペア:

[(1, 21158740), (2, 10579370), (4, 5289685), (5, 4231748), (10, 2115874), (20, 1057937), (31, 682540), (62, 341270), (124, 170635), (155, 136508), (310, 68254), (620, 34127)]