18708151

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{569}}^1$

素因数の和:655

約数の個数: 24

約数和(自身を含む): 24172560

約数和(自身を除く): 5464409

約数列:

[1, 7, 11, 49, 61, 77, 427, 539, 569, 671, 2989, 3983, 4697, 6259, 27881, 32879, 34709, 43813, 242963, 306691, 381799, 1700741, 2672593, 18708151]

約数ペア:

[(1, 18708151), (7, 2672593), (11, 1700741), (49, 381799), (61, 306691), (77, 242963), (427, 43813), (539, 34709), (569, 32879), (671, 27881), (2989, 6259), (3983, 4697)]