27980029

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 38676096

約数和(自身を除く): 10696067

約数列:

[1, 7, 11, 23, 37, 49, 61, 77, 161, 253, 259, 407, 427, 539, 671, 851, 1127, 1403, 1771, 1813, 2257, 2849, 2989, 4697, 5957, 9361, 9821, 12397, 15433, 15799, 19943, 24827, 32879, 41699, 51911, 65527, 68747, 108031, 110593, 173789, 363377, 458689, 571021, 756217, 1216523, 2543639, 3997147, 27980029]

約数ペア:

[(1, 27980029), (7, 3997147), (11, 2543639), (23, 1216523), (37, 756217), (49, 571021), (61, 458689), (77, 363377), (161, 173789), (253, 110593), (259, 108031), (407, 68747), (427, 65527), (539, 51911), (671, 41699), (851, 32879), (1127, 24827), (1403, 19943), (1771, 15799), (1813, 15433), (2257, 12397), (2849, 9821), (2989, 9361), (4697, 5957)]