21906591

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61363}}^1$

素因数の和:61390

約数の個数: 16

約数和(自身を含む): 35345664

約数和(自身を除く): 13439073

約数列:

[1, 3, 7, 17, 21, 51, 119, 357, 61363, 184089, 429541, 1043171, 1288623, 3129513, 7302197, 21906591]

約数ペア:

[(1, 21906591), (3, 7302197), (7, 3129513), (17, 1288623), (21, 1043171), (51, 429541), (119, 184089), (357, 61363)]