19876828

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{1021}}^1$

素因数の和:1213

約数の個数: 24

約数和(自身を含む): 36170624

約数和(自身を除く): 16293796

約数列:

[1, 2, 4, 31, 62, 124, 157, 314, 628, 1021, 2042, 4084, 4867, 9734, 19468, 31651, 63302, 126604, 160297, 320594, 641188, 4969207, 9938414, 19876828]

約数ペア:

[(1, 19876828), (2, 9938414), (4, 4969207), (31, 641188), (62, 320594), (124, 160297), (157, 126604), (314, 63302), (628, 31651), (1021, 19468), (2042, 9734), (4084, 4867)]