21337295

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:192

約数の個数: 48

約数和(自身を含む): 32503680

約数和(自身を除く): 11166385

約数列:

[1, 5, 7, 17, 35, 47, 49, 85, 109, 119, 235, 245, 329, 545, 595, 763, 799, 833, 1645, 1853, 2303, 3815, 3995, 4165, 5123, 5341, 5593, 9265, 11515, 12971, 25615, 26705, 27965, 35861, 39151, 64855, 87091, 90797, 179305, 195755, 251027, 435455, 453985, 609637, 1255135, 3048185, 4267459, 21337295]

約数ペア:

[(1, 21337295), (5, 4267459), (7, 3048185), (17, 1255135), (35, 609637), (47, 453985), (49, 435455), (85, 251027), (109, 195755), (119, 179305), (235, 90797), (245, 87091), (329, 64855), (545, 39151), (595, 35861), (763, 27965), (799, 26705), (833, 25615), (1645, 12971), (1853, 11515), (2303, 9265), (3815, 5593), (3995, 5341), (4165, 5123)]