21975388

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{389}}^1\times {\mathrm{487}}^1$

素因数の和:909

約数の個数: 24

約数和(自身を含む): 39967200

約数和(自身を除く): 17991812

約数列:

[1, 2, 4, 29, 58, 116, 389, 487, 778, 974, 1556, 1948, 11281, 14123, 22562, 28246, 45124, 56492, 189443, 378886, 757772, 5493847, 10987694, 21975388]

約数ペア:

[(1, 21975388), (2, 10987694), (4, 5493847), (29, 757772), (58, 378886), (116, 189443), (389, 56492), (487, 45124), (778, 28246), (974, 22562), (1556, 14123), (1948, 11281)]