21609850

素因数分解:

$2^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{11681}}^1$

素因数の和:11730

約数の個数: 24

約数和(自身を含む): 41284188

約数和(自身を除く): 19674338

約数列:

[1, 2, 5, 10, 25, 37, 50, 74, 185, 370, 925, 1850, 11681, 23362, 58405, 116810, 292025, 432197, 584050, 864394, 2160985, 4321970, 10804925, 21609850]

約数ペア:

[(1, 21609850), (2, 10804925), (5, 4321970), (10, 2160985), (25, 864394), (37, 584050), (50, 432197), (74, 292025), (185, 116810), (370, 58405), (925, 23362), (1850, 11681)]