19465240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11317}}^1$

素因数の和:11371

約数の個数: 32

約数和(自身を含む): 44819280

約数和(自身を除く): 25354040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11317, 22634, 45268, 56585, 90536, 113170, 226340, 452680, 486631, 973262, 1946524, 2433155, 3893048, 4866310, 9732620, 19465240]

約数ペア:

[(1, 19465240), (2, 9732620), (4, 4866310), (5, 3893048), (8, 2433155), (10, 1946524), (20, 973262), (40, 486631), (43, 452680), (86, 226340), (172, 113170), (215, 90536), (344, 56585), (430, 45268), (860, 22634), (1720, 11317)]