21379708

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{24631}}^1$

素因数の和:24673

約数の個数: 24

約数和(自身を含む): 44140544

約数和(自身を除く): 22760836

約数列:

[1, 2, 4, 7, 14, 28, 31, 62, 124, 217, 434, 868, 24631, 49262, 98524, 172417, 344834, 689668, 763561, 1527122, 3054244, 5344927, 10689854, 21379708]

約数ペア:

[(1, 21379708), (2, 10689854), (4, 5344927), (7, 3054244), (14, 1527122), (28, 763561), (31, 689668), (62, 344834), (124, 172417), (217, 98524), (434, 49262), (868, 24631)]