215690279

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 262918656

約数和(自身を除く): 47228377

約数列:

[1, 7, 37, 43, 107, 181, 259, 301, 749, 1267, 1591, 3959, 4601, 6697, 7783, 11137, 19367, 27713, 32207, 46879, 54481, 135569, 170237, 287971, 716579, 832781, 1191659, 2015797, 5016053, 5829467, 30812897, 215690279]

約数ペア:

[(1, 215690279), (7, 30812897), (37, 5829467), (43, 5016053), (107, 2015797), (181, 1191659), (259, 832781), (301, 716579), (749, 287971), (1267, 170237), (1591, 135569), (3959, 54481), (4601, 46879), (6697, 32207), (7783, 27713), (11137, 19367)]